Favorite Pokemon game: 4-way tie between Emerald, Black 1 & 2, and Y. Each of them for their own specific reasons, but I can't pick one over the other.
Favorite Pokemon: Design-wise, Seviper. Snakes are just awesome, and he's got the battle scars and the wicked tail to back his awesomeness up. Battle-wise, Idunno, toss-up between Mega Mawile, Claydol, Hydreigon, Scizor, Talonflame, Jellicent, Gardevoir, Golurk, Metagross, Arcanine, and Arceus. [I might add more later as I think of them]