STAR WARS!
Amazingly, this film was made two years before STAR WARS was released yet Diane Keaton dressed up as Princess Leia and Woody Allen dresses up as Chewbacca in this scene:
https://www.youtube.com/watch?v=og7lUpWutyY
HIGH-larious!
"'Extremely High Voltage.' Well, I don't need safety gloves, because I'm Homer SimpsonBZZZSSZZSSZZSSZZ--" - Frank Grimes