First game i ever played was Dogz 5... it's a terrible game but i still love it.
Also you can make weird messed up hybrids through the power of modded pets and the game's weird system when it came to mixed breeds...
I've made some strange creatures on there...
I hesitate between Chicken Invaders 2 and some other game the name of which I don't remember. The latter was about a chicken-man who went through labyrinths and used bombs to blow up walls and monsters.
Sonic Heroes. Xbox
I remember every time I went to see my relatives in Austin I would rush past my aunts and uncles, dash up the stairs or down the basement (depending on where it was) and play Sonic Heroes. It's the first game I recall playing.
Coincidentally, the first game I played on a handheld was Sonic Rush! (Nintendo DS)
So yeah, I've kinda been a Sonic the Hedgehog fan since.