1. Saturday Night Fever (1977): A classic that launched Travolta to superstardom. He plays Tony Manero, a Brooklynite who finds escape and expression through disco dancing.
2. Grease (1978): Another iconic film, this time a musical set in the 1950s. Travolta plays Danny Zuko, a greaser who falls for the "good girl" Sandy.
3. Pulp Fiction (1994): A Quentin Tarantino masterpiece, this film revived Travolta's career. He plays Vincent Vega, a hitman who gets into all sorts of trouble.
4. Face/Off (1997): This action thriller features Travolta and Nicolas Cage in a face-swapping scenario. Travolta plays Sean Archer, an FBI agent who must undergo facial surgery to infiltrate a terrorist organization.
5. Hairspray (2007): A musical based on the 1988 film, Travolta plays Edna Turnblad, Tracy's overprotective mother. It's a notable role for its unique portrayal and Travolta's comedic timing.
These are just a few of the many films John Travolta has been in throughout his long and successful career.