Gottlieb Astro, I know it's not a very fun game, but I love the artwork. I found one in a friend's warehouse, unfortunately it had been catching water from a leaky roof for 20+ years and was pretty destroyed. I saved the head, but the body was destroyed.
An Asteroid Annie would be pretty neat too. Still kicking myself for not buying the one that came up on Mr Pin last year right before Allentown.