We have an Xbox; my husband plays more frequently than I do. He enjoys puzzle games and first person shooters and those aren't really my favorites to play. I like in-depth role playing games.
I've been sucked into Dragon Age: Origins. I've got almost thirt-seven hours into the game play and I've still only traveled 20% of the world. It's probably going to take me three years to finish this thing---there are six different main character choices and each one awards a different achievement for just starting the character and playing through the first couple of battles. I thought about having multiple characters going at once, but I decided I didn't want to mix up the histories and things like that. It's a lot to take in at once.
I apologize for rambling, I just can't get over how large this game really is. I'm having a blast and I haven't found a comparable game, yet.