Oblivion
Have you guys SEEEEN this? Holy shit! Everyone I talk to is telling me to stay away from it, because it will eat up every last minute of my day and I will never sleep, eat or be with my family again. I've been looking up some info on the net about gameplay and it sounds like this is the best thing in non-linear gameplay EVAR. Even the NPCs use AI routines to decide where to go in their environment to eat, sleep.. what to say.. if they want to buy something, steal, fight.. whatever. WOW.
I'm thinking about picking it up, but I'm afraid I'll neglect everything that is really important in my life. LOL.
http://www.elderscrolls.com/games/oblivion_overview.htm