Happy Birthday, Gemini (1980)

Based on the off-Broadway/Broadway smash of the 1970s; a poor Harvard student's romance with a girl hits a rough spot when he realizes, on his 21st birthday, that he may be in love with her brother.

Directed by: Richard Benner

Starring: Madeline Kahn, Rita Moreno, David Marshall Grant, Robert Viharo, Jeff Wincott, Sarah Holcomb

Links: IMDb, Movie posters, Movie stills