The Streetfighter series remains my all-time favorite, but recently I visited an arcade (hadn't been in a long) and damn they had some neat stuff. Lots of really big games with all this complex equipment, bikes, command center, etc. My favorite was one where you got into this little room and had a model sword, and when you swung the sword your character (a samurai) made the same movements. I sucked at it, and probably looked like an idiot, but it was a lot of fun I'll have to go again some time.