Taiko no Tatsujin. I played that thing until I had bleeding blisters on my hands when it first came out in the arcades.
*feeling a bit embarrassed about leaking that bit of private life info...*
I have a soft place for DDR though. I have absolutely no sense of rhythm when it comes to moving my feet so have never played it myself... But my husband played it on our first date.
*more embarrassment*
ETA;
I wish I could remember the name of that arcade game with a realistic drum set that was around late 90s to early 00s. My husband could play through the hardest song on the secret hardest level (which you had to get perfect on the regular "hardest" level to even open) perfectly and with style. :P
My husband is so cool.
