Fallout: New Vegas. Spent a bit of time playing this over the long weekend. I'm 40+ hours into it and I still haven't even got to New Vegas yet! It is amazing how much they packed into New Vegas. It is easy to dismiss it as a cheap cash in expansion pack, but it is so massive and complex, I can see why it took so long to make. It isn't just an expansion pack.
I'm not concentrating on the main quest right now. I'm too busy wondering the wastes, trying to find all the locations on the map. Not easy when I keep running into Caesar patrols, who basically all want me dead. I have found a couple of companions, so that makes it a lot easier.
I am still finding hilarious glitches. I'll routinely find enemies (especially Radscorpions) that have fallen through the floor, so just their tails stick out. And yesterday I found an NPC teaching an empty classroom. He was talking and writing on the blackboard - only there were no kids in the room and nothing was written on the board, even though it was making scribbling noises. I couldn't tell if he was mental or it was a bug
I tell you what though, it is well worth doing the "ED-E My Love" mission. It is fascinating.