Mannequin! oh, man, do i love that that crappy movie! I still get chills hearing 'Nothing's Gonna Stop Us Now'.
EDIT: I would definitely have to add The Fifth Element, Showgirls and The Wedding Planner.
But i don't agree with Galaxy Quest being a bad movie. Not at all!
OMG! I remember Mannequin! I loved it!
I don't know if Galaxy Quest is good or bad, I just know that I love love love it and no one else I know does!