My Stepmother is an Alien (1988): Doing God's work for Human-Alien relations since 1988...
Dan Aykroyd went from getting a ghost-job in Ghostbusters to this. Not to mention being taken in by Jamie Leigh Curtis in Trading Places. The man had the greatest agent in Hollywood history.
Can only imagine how the pitch meeting for this one went: "So she’s an alien, she eats batteries, and then she does this to Dan Aykroyd." - Instant green light, how much $$$ do you need?