Voyage of the Rock Aliens (1984)
If there's a better 80s rock musical than "Voyage of the Rock Aliens" I haven't seen it. Pia Zadora (one of the greatest non-singing, non-dancing, non-acting stars of all time) plays a trashy midget whose mega-mulleted boyfriend won't let her sing with his band - probably because he's heard her sing. Fortunately some aliens invade Earth and invite her to join them for several stand-out musical numbers. At the end everyone was attacked by a giant mutant squid but the bald guy from "The Hills Have Eyes" attacked it with a chainsaw and saved the day. Everything about this movie - the tinny synth riffs, the 80s fashion statements, the general air of ineptitude - was sensational. 97 minutes of my life simply flew by.