MMO
It keeps me interested for longs amount of time, and that what I love about games. Not a big fan of playing a lot of different games. Quality of quantity.
Once I figured out wrestling was fake, I stopped watching. I was only liking the WWF though. Favorite wrestlers were Undertaker, Kane when he had his mask. Scotty too Hotty, Mick Foley, Shawn Michaels, the Rock, and Randy Orton.
Hayate no Gotoku - funny as heck, and has kawaii girls, lel
One Piece is a close second too. Also funny, and great fighting scenes/arcs, and also good plot.
Gamecube - N64 came close, but I had to go with GC because of games like SSBM, and Mario Sunshine.
Pokemon Colliseum, XD, Harvest Moon, and Sonic Adventure 2 Battle were honorable mentions for the amount of fun I had playing.