(Jon Pack | courtesy Sundance Institute) Jillian Bell stars in Paul Downs Colazzo's comedy "Brittany Runs A Marathon," an official selection in the U.S. Dramatic Competition of the 2019 Sundance Film Festival.
Anna Chlumsky arrives at the 22nd annual Screen Actors Guild Awards at the Shrine Auditorium & Expo Hall on Saturday, Jan. 30, 2016, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Lily Collins, a cast member in "To the Bone," poses at the premiere of the film at the Eccles Theatre during the 2017 Sundance Film Festival on Sunday, Jan. 22, 2017, in Park City, Utah. (Photo by Chris Pizzello/Invision/AP)
(AJ Eaton | courtesy Sundance Institute) Rocker David Crosby is profiled in AJ Eaton's "David Crosby: Remember My Name," an official selection in the U.S. Documentary Competition of the 2019 Sundance Film Festival.
(Francisco Kjolseth | The Salt Lake Tribune) Actor and producer Tim Daly takes in the 2018 Sundance Film Festival in Park City on Friday, Jan. 19, 2018.
Blythe Danner, a cast member in "I'll See You in My Dreams," works the press line at the premiere of the film at the Eccles Theatre during the 2015 Sundance Film Festival on Tuesday, Jan. 27, 2015, in Park City, Utah. (Photo by Chris Pizzello/Invision/AP)
This Sept. 9, 2018 photo shows Viola Davis, a cast member in the film "Widows," posing for a portrait at the Ritz-Carlton Hotel during the Toronto International Film Festival in Toronto. (Photo by Chris Pizzello/Invision/AP)
Natalia Dyer walks on stage at the "Stranger Things" panel on day three of Comic-Con International on Saturday, July 22, 2017, in San Diego. (Photo by Richard Shotwell/Invision/AP)
Zac Efron arrives at the U.S. Premiere of "Baywatch" at Lummus Park on Saturday, May 13, 2017, in Miami Beach, Fla. (Photo by Omar Vega/Invision/AP)
ADDS LOCATION - In this March 28, 2018 photo, Chiwetel Ejiofor poses for a portrait in New York to promote his Netflix series, "Come Sunday," debuting on April 13. (Photo by Taylor Jewell/Invision/AP)
(Julius Chiu | courtesy Sundance Institute) Alice Englert, center, and Walton Goggins, right, star in "Them That Follow," by Britt Poulton and Daniel Savage, an official selection in the U.S. Dramatic Competition of the 2019 Sundance Film Festival.
Josh Gad introduces a clip from outstanding motion picture nominee "Marshall" at the 49th annual NAACP Image Awards at the Pasadena Civic Auditorium on Monday, Jan. 15, 2018, in Pasadena, Calif. (Photo by Chris Pizzello/Invision/AP)
Jim Gaffigan attends the 12th annual Stand Up For Heroes benefit concert at the Hulu Theater at Madison Square Garden on Monday, Nov. 5, 2018, in New York. (Photo by Brad Barket/Invision/AP)
Henry Louis Gates Jr., host and executive producer of "Finding Your Roots with Henry Louis Gates Jr.," takes part in a panel discussion on the show during the 2018 Television Critics Association Summer Press Tour at the Beverly Hilton, Tuesday, July 31, 2018, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP)
Walton Goggins walks on stage to accept the award for best supporting actor in a comedy series for "Vice Principals" at the 23rd annual Critics' Choice Awards at the Barker Hangar on Thursday, Jan. 11, 2018, in Santa Monica, Calif. (Photo by Chris Pizzello/Invision/AP)
Renee Elise Goldsberry, best known for portraying Angelica Schuyler in the original Broadway cast of "Hamilton."
Eiza Gonzalez attends the Governors Ball after the Oscars on Sunday, March 4, 2018, at the Dolby Theatre in Los Angeles. (Photo by Eric Jamison/Invision/AP)
FILE - In this July 20, 2015, file photo, actor Jake Gyllenhaal attends the premiere of "Southpaw" in New York. Gyllenhaal is one of many actors lending their voices to audiobooks. (Photo by Evan Agostini/Invision/AP, File)
Lena Headey arrives at the 66th Primetime Emmy Awards at the Nokia Theatre L.A. Live on Monday, Aug. 25, 2014, in Los Angeles. (Photo by Evan Agostini/Invision for the Television Academy/AP Images)
FILE - In this Sept. 20, 2015 file photo, James Hetfield of Metallica performs at the Rock in Rio music festival in Rio de Janeiro, Brazil. The Super Bowl takes place a week before the Grammys, but the big game is rivaling the awards shows with a plethora of live concerts and on-site musicians, from the Red Hot Chili Peppers and Metallica to Pharrell and Skrillex. (AP Photo/Felipe Dana, File)
FILE - In this April 4, 2018 file photo, Dwayne Johnson arrives at the world premiere of "Rampage" at the Microsoft Theater in Los Angeles. Johnson, who plays an amputee in the action movie "Skyscraper" said Thursday, July 12, he is joining the Boston-based Ruderman Family Foundation, calling for more inclusion and opportunities for people with disabilities in the entertainment industry. (Photo by Chris Pizzello/Invision/AP, File)
Actor John Lithgow poses at the premiere of the film "Beatriz at Dinner" at the Eccles Theatre during the 2017 Sundance Film Festival on Monday, Jan. 23, 2017, in Park City, Utah. (Photo by Arthur Mola/Invision/AP)
Thomas Mann, a cast member in "Me and Earl and the Dying Girl," poses at the premiere of the film at the Eccles Theatre during the 2015 Sundance Film Festival on Sunday, Jan. 25, 2015, in Park City, Utah. (Photo by Chris Pizzello/Invision/AP)
Actress Emily Mortimer attends the Museum of Modern Art Film Benefit tribute to Martin Scorsese, presented by Chanel, on Monday, Nov. 19, 2018, in New York. (Photo by Evan Agostini/Invision/AP)
In this Nov. 14, 2018 photo, Rep.-elect Alexandria Ocasio-Cortez, D-N.Y., talks with reporters following a photo opportunity on Capitol Hill in Washington. While tea party Republicans swept to power to stop things -- repeal Obamacare, roll back environmental regulations and decrease the size and scope of government -- Democrats are marching into the majority to build things back up. And after spending eight downcast years in the minority, they can’t wait to get started. (AP Photo/Susan Walsh)
This image released by Lionsgate and Roadside Attractions shows Chris O'Dowd in a scene from "Juliet, Naked." (Alex Bailey/Lionsgate and Roadside Attractions via AP)
David Oyelowo arrives at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision/AP)
(Liza Nelson | courtesy S-Curve Records) Neyla Pekarek, formerly a member of The Lumineers, will be one of the performers at the BMI Snowball, Tuesday, Jan. 29, in Park City during the 2019 Sundance Film Festival.
FILE - In this March 31, 2016 file photo, Wendell Pierce, a cast member in "Confirmation," poses at the premiere of the HBO film in Los Angeles. Pierce has announced that the grand opening of an apartment complex will be next month. The Baltimore Sun reports Pierce said in a tweet, "Grand Opening of The Nelson Kohl Apartments 20 E. Lanvale. April 6th 11:30am. Come and join me as we cut the ribbon!!!" (Photo by Chris Pizzello/Invision/AP, File)
Rosamund Pike wears a Vera Wang gown as she arrives at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by John Shearer/Invision/AP)
Lily Rabe arrives at the 22nd annual Screen Actors Guild Awards at the Shrine Auditorium & Expo Hall on Saturday, Jan. 30, 2016, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
FILE - In this Sept. 23, 2016 file photo, Daniel Radcliffe arrives at the Empire Live event in London. Radcliffe, who played the boy wizard in the J.K. Rowling franchise, will return to Broadway in “The Lifespan of a Fact,” co-starring Bobby Cannavale and Cherry Jones. Leigh Silverman will direct. The show will begin performances on Sept. 20, 2018 and will officially open on October 18. (Photo by Vianney Le Caer/Invision/AP, File)
Sundance Institute founder Robert Redford takes part in the opening day press conference at the 2018 Sundance Film Festival on Thursday, Jan. 18, 2018, in Park City, Utah. (Photo by Chris Pizzello/Invision/AP)
In this Feb. 25, 2018 photo, Storm Reid poses for a portrait at The W Hotel in Los Angeles to promote her film, "A Wrinkle in Time," which opens nationwide on Friday, March 9. (Photo by [Rebecca Cabage/Invision/AP)
Actress Emma Roberts poses for photographers upon arrival at the BAFTA 2018 Awards in London, Sunday, Feb. 18, 2018. (Photo by Joel C Ryan/Invision/AP)
Rene Russo arrives at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision/AP)
Actor Peter Sarsgaard poses at the premiere of "Experimenter" during the 2015 Sundance Film Festival on Sunday, Jan. 25, 2015, in Park City, Utah. (Photo by Danny Moloshok/Invision/AP)
Actress Kyra Sedgwick attends the Through Her Lens: The Tribeca Chanel Women's Filmmaker Program Luncheon at Locanda Verde on Tuesday, Oct. 17, 2017, in New York. (Photo by Evan Agostini/Invision/AP)
Alia Shawkat attends the LA Premiere of "Arrested Development" Season Five at Raleigh Studios Hollywood on Thursday, May 17, 2018, in Los Angeles. (Photo by Richard Shotwell/Invision/AP)
Hilary Swank arrive at the 6th annual Governors Awards at the Hollywood and Highland Center on Saturday, Nov. 8, 2014 in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Actress Mia Wasikowska poses at the premiere of "Damsel" during the 2018 Sundance Film Festival on Tuesday, Jan. 23, 2018, in Park City, Utah. (Photo by Danny Moloshok/Invision/AP)
Naomi Watts, a cast member in "Ophelia," poses at the premiere of the film at the 2018 Sundance Film Festival on Monday, Jan. 22, 2018, in Park City, Utah. (Photo by Chris Pizzello/Invision/AP)
(David Paul Jacobson | courtesy Sundance Institute) Sex therapist Dr. Ruth Westheimer is profiled in Ryan White's "Ask Dr. Ruth," an official selection in the Documentary Premieres Program of the 2019 Sundance Film Festival.
Actor Alfre Woodard speaks during the Robert F. Kennedy Human Rights Ripple of Hope Awards ceremony, Wednesday, Dec. 12, 2018, in New York. (AP Photo/Jason DeCrow)
For some, the excitement of the Sundance Film Festival is like that of birdwatching: Whom can you spot, or photograph, out in the wild?
For those people, this list can serve as a field guide. These are celebrities who have been confirmed as attending the 2019 Sundance Film Festival, running from Jan. 24 to Feb. 3. They are identified here not by their plumage, but by what they’re promoting while they’re in Park City, the work most people would know them from, and how they identify themselves via Twitter.
The celebrity is… • Appearing at Sundance in… • Recognizable from … • Twitter handle is …
Zac Efron • “Extremely Wicked, Shockingly Evil and Vile” (Premieres) • “High School Musical,” “Baywatch” • @ZacEfron
Chiwetel Ejiofor • “The Boy Who Harnessed the Wind” (Premieres), “The Elephant Queen” (Kids) • “12 Years a Slave,” “Doctor Strange”
Alice Englert • “Them That Follow” (U.S. Dramatic) • “Top of the Lake,” “Beautiful Creatures”
Nick Frost • “Fighting With My Family” (Premieres) • “Shaun of the Dead,” “The World’s End”
Josh Gad • “Little Monsters” (Midnight) • “Beauty and the Beast,” “Frozen” • @joshgad
Jim Gaffigan • “Them That Follow” (U.S. Dramatic), “Light From Light” (Next), “Troop Zero” (Premieres) • stand-up comedian, “The Jim Gaffigan Show” • @JimGaffigan
Henry Louis Gates Jr. • “Railroad Ties” (SundanceTV promo) • Harvard professor, host of “Finding Your Roots” • @HenryLouisGates
Walton Goggins • “Them That Follow” (U.S. Dramatic) • “Justified,” “The Hateful Eight”
Renée Elise Goldsberry • “Documentary Now! (Special Events) • “Hamilton,” “The House With a Clock in Its Walls” • @ReneeGoldsberry