Rpg, and fighting are my favs.
Mortal Kombat (any of them except Mk vs Dc) is up on my top 5. And for a decent amount of play time Any TES game or Final Fantasy's 1-9
Ff 10 and 12 were amazing. 13 was balls. 11 was pc only, which is also balls. 8 sucked.
Shooters are somewhat entertaining, but for me they get old quickly. In online, you just do the same thing over and over. In the campaign (story mode) it's what, 5 hours? They're alright though.
I must say that mw3 is shameful. One of the worst games I've ever played. Black ops was better. Would've been damn near perfect if there was a bit less lag.