Movies:
* La Bamba (1987): Crenshaw plays Ritchie Valens in this biopic, singing the iconic "La Bamba" song.
* The Adventures of Buckaroo Banzai Across the 8th Dimension (1984): Crenshaw appears as himself, performing a song at a nightclub.
* Rock 'n' Roll High School (1979): Crenshaw plays a character called "Teenage Idol" in this cult classic.
* The Idolmaker (1980): Crenshaw portrays a character named "The Idolmaker" in this movie.
* My Dinner with Andre (1981): Crenshaw has a small role as a restaurant customer.
* The Last Picture Show (1971): Crenshaw is a "Teenager in a Car" in this acclaimed movie.
Television:
* The Simpsons (1997): Crenshaw guest stars in the episode "The Springfield Files" as himself.
* The Sopranos (2004): Crenshaw appears as himself in the episode "Stage 5" while performing at a club.
* The Goldbergs (2016): Crenshaw plays himself in an episode.
* Saturday Night Live (1980): He appeared as a musical guest.
* Late Night with Conan O'Brien: Crenshaw has made multiple appearances on this talk show.
Other Notable Appearances:
* The Adventures of Pete & Pete (1994): Crenshaw performed his song "Cynical Girl" in a special episode of this children's show.
* Sesame Street (1997): Crenshaw performed his song "There She Goes" for Sesame Street.
It's important to note that this list is not exhaustive, and he might have made other appearances in lesser-known projects.