31. SSX Tricky (GC)
I don't have a lot of love for the sixth generation of gaming, but this was a rare bright spark. It's just pure, ridiculous, over the top fun, filled with crazy tracks, crazy tricks, and colourful characters. It was also responsible for me humming "it's tricky, tricky, tricky" to myself fairly regularly for a period of time. Eddie was always my preferred character, and I played the game so much that I knew the necessary combos for his tricks like the back of my hands.
Clue for 30 (although it's going to be posted pretty soon). This game is regarded as a revolutionary game within its genre.