Sandwiched between two epic fails, Get Crazy is a sadly under seen cult movie musical gem directed by Alan Arkush (the best being Rock & Roll High School.)

3 good reasons to Riff this film:

1. The cast is unbelievable (Malcolm McDowell, Lou Reed, Lee Ving, Mary Woronov, Ed Begley, Jr., Daniel Stern, that guy from The Doors, etc.) https://www.imdb.com/title/tt0085551/

2. The song "Hoochie Coochie Man" is heard several times, in different genres The best version is performed by Lee Ving https://youtu.be/zRfk3UIjJTQ

3. Ed Begley, Jr. is the silver jump-suited villain, and his henchmen are...Bobby Sherman and Fabian! https://youtu.be/_-JjKAg8j9E

Hmmm, the two epic fails are Heartbeeps (1981) and Caddyshack II (1988) so you could riff the hell out of those too.