Favorite All Time Arcade Game

I think most of the people on this forum are too young to have ever popped a quarter into a video game for 3 minutes of fun but heres my question. Whats your all time favorite?

And I mean ARCADE GAME!

Not an arcade game converted to your nintendo/sega/sony whatever system.

I mean a beat up, one button broken, cigarette burned, arcade game like the ones that used to be on every street corner and 7-11. Man! If I had all those quarters back my bank account would not look so pitiful right now.

My vote: Streetfighter 2

I could play for hours on 50 cents or even 25 as long as the rookies lined up to try to kill my mighty Blanka