#21 - Spyro the Dragon (Kudos to Truckosaurus for guessing this)
It's hard for me to talk about Spyro without gushing, so I'll try to keep it short and sweet. The Spyro trilogy is my favourite trilogy of games ever. The first game is the title that gave me a lifelong appreciation of 3D collectathon platformers. Stewart Copeland's soundtrack was perfect. The levels were colourful, fantastical and a blast to play through. On revisiting this game recently, I had as much fun with it as I've ever had.
It has a few small niggles to do with difficulty and it's not as polished as the second or third games, but by god it's an enjoyable experience. If you've ever played a Banjo Kazooie/3D Mario/3D Rayman/Ratchet/Jak/Sly game and haven't played the original Spyro, go back and do it now. You really won't regret it.