Right now I've been massively playing loads of Skyrim and its DLC
but I love Assassin's Creed as well - except this 3rd game was sort of a disappointment (except for the Dezmon portions)
Otherwise, Final Fantasy (VII , VIII and Tactics), Legend of Zelda OoT, MM, TP and Skyward Sword... errr I have fun messing around on the Harry Potter games but I'm not very proficient at the 3rd one seeing as I'm stuck in the library
Drakan the Ancients Gates - love that game. So underrated. The Suffering, another underrated game...
And finally Amnesia, Sims 3 and Jade Dynasty. But I don't play any of these three very often.