My first mind blowing game was Super Mario 64. My first truly 3D game ever plus it was a Mario game. This game was pure win from start to finish. I don't think any other game will ever blow my mind quite like this game did although many came close including FF7 and Super Mario Galaxy.
FootballFan - "GT has never been bigger than Halo. Now do a comparison between the two attach ratios and watch GT get stomped by Halo. Reach will sell 5 million more than GT5. Quote me on it."