There’s a certain joy to seeing Jeff Goldblum at the start of his career, Donna Summer at her peak, and The Commodores in funky disco threads. For these reasons, Thank God It’s Friday is a cult classic. The reasons it stayed cult rather than gaining greater popularity? Well, it isn’t a good movie. It is duller than it should be, filled with ethnic and gay stereotypes, stiff acting, and not much of a script. There isn’t enough music and what is good gets cut off. Last Dance deserved a better vehicle. Of the songs by The Commodores in the film, they should have showcased Brick House instead of Too Hot Ta Trot. Still, it can be fun to look back at an exploitative period piece trying to cash in on the success of Saturday Night Fever.