Grew up with the PlayStation, and I've got all three consoles in the series- PSX, PS2, and PS3. I love them all dearly <3 I was never really a fan of the original Xbox or the 360, mainly because neither of them have enough good exclusives to entice me into buying; most of the great games 360 owners love playing are cross-console titles
Plus, in my opinion, the few notable exclusives on 360 (Halo, Gears of War, maybe Fable?) don't really stack up to the PS3 exclusives (Metal Gear Solid 4, Uncharted 1, 2, and 3, Killzone 2 and 3, God of War III, MotorStorm, Heavy Rain, inFamous + inFamous 2, LittleBigPlanet + LBP2, etc), so I don't see any reason to switch. Not to mention the fact that I don't want to pay for online service!
Favorite games in general would probably have to be the Metal Gear series (hence my username), Grand Theft Auto, Call of Duty, Battlefield, BioShock, Kingdom Hearts, and indie games on PC- stuff along the lines of Lugaru/Overgrowth by Wolfire, Cortex Command by Data Realms, Penumbra by Frictional Games, Minecraft by Notch, and so on.