"Grease: Live" aired Sunday night on Fox to rave reviews on social media. Olivia Newton-John and John Travolta played the protagonists, Sandy and Danny, in the 1978 movie; Julianne Hough and Aaron Tveit took on the roles in "Grease: Live." Click through to compare the stars of the film with the TV production.
Travolta had performed in "Grease" on Broadway. The 1978 film version, coming on the heels of "Saturday Night Fever," made him one of the biggest stars in Hollywood.
Tveit has been building a resume in theater, TV and film. Younger fans may known him as Trip van der Bilt from "Gossip Girl," but he's been a lead in the USA series "Graceland," played Enjolras in the film version of "Les Miserables" and starred as Link Larkin in Broadway's "Hairspray."
Olivia Newton-John was one of the leading vocalists of the '70s, and "Grease" was her American film debut. Her film career didn't amount to much, but she's continued being a popular singer.
Hough is known for "Dancing With the Stars," where she's been a two-time champion, but she's also established a film career, with appearances in 2011's "Footloose," 2012's "Rock of Ages" and the recently released "Dirty Grandpa."
Stockard Channing has gone back and forth between film, TV and stage since starring as Rizzo in the 1978 film. Among her credits: the John Guare plays "The House of Blue Leaves" and "Six Degrees of Separation"; the film version of "Six Degrees"; and the shows "The West Wing" and "The Good Wife."
Vanessa Hudgens takes on the Rizzo role in "Grease: Live." The performer has been in "High School Musical" and "Spring Breakers," as well as a stage version of "Gigi."
Jeff Conaway was a "Grease" Broadway veteran when he played Kenickie in the film version. After the film, he starred as Bobby in "Taxi," but though he also appeared in "The Bold and the Beautiful" and "Babylon 5," substance abuse problems derailed his career. He died in 2011.
Carlos PenaVega, who plays Kenickie in "Grease: Live," is part of the group Big Time Rush (and was on the TV show of the same name) and hosted Nickelodeon's game show "Webheads."
Didi Conn, who played Frenchy in the 1978 film, has appeared on a variety of TV series, including "Shining Time Station." She has a small role in "Grease: Live."
Carly Rae Jepsen, who plays Frenchy in the TV production, leaped to fame thanks to her hit song "Call Me Maybe." In 2014, she played Cinderella in the Broadway production of "Rodgers & Hammerstein's Cinderella."
Dinah Manoff, right, played Marty in the 1978 film. She has several TV credits, including a long run in "Empty Nest," in which she played Carol.
TV host Vince Fontaine was played by Edd Byrnes, right, who had started a craze with his character Kookie on the 1958-64 series "77 Sunset Strip."
Mario Lopez is playing the same character on "Grease: Live." The "Saved by the Bell" star has experience hosting dance shows, having emceed "America's Best Dance Crew."
The 1978 film was the No. 1 box office hit of the year and remains the highest-grossing musical of all time in the U.S. Only "Mamma Mia" has surpassed it worldwide.
"Grease: Live" is just the first musical Fox is planning. The network will also roll out a version of "The Rocky Horror Picture Show" this year.