I personally think everyone, at least once in their lives, should watch the Xanadu stage musical. A fantastic tribute to the original material, a stunning display of talent, and an amazingly funny show that recognizes and comments on just how ridiculous it is. Please, if you like comedy musicals, watch this:
The Village People's "YMCA" in their movie "Can't stop the Music" from 1980, this movie and "Xanadu" are the reason why we have the Golden Raspberry Awards.