I can fully vouch for Wild Zero - that is one of the most enjoyable movies I have seen this millennium. It's pretty easy to find the DVD for less than $20, and totally worth it. Starring Guitar Wolf - that should be enough to hook you all right there. Plus zombies, motorcycles, UFOs, a laser sword, and general insanity... Just watch it. Truly, it is the best "Rock'n'Roll JET Movie" of all time.
I will nominate a movie that could not be more different, stylistically: Dead Man (1995), Jim Jarmusch's existential western. Not usually my kind of thing, but this movie is...different. I've shown to some people (like my wife) who were not into at all and generally ended up falling asleep, but I thought it was amazing. Starring Johnny Depp and Gary Farmer, with Iggy in a small (hilarious) roll, and Gibby Haynes has a cameo. Neil Young provides the soundtrack - just Neil's guitar, heavily reverbed, with no lyrics. Very atmospheric, this is a case where the soundtrack really enhances the movie. Simply awesome. Netflix has it, and DVDs can be found for under $10 (check Half.com).