Fallout: New Vegas. Decided to play on Hardcore mode. Also I decided I loved the writing when I got to Nikki and Vance Casino and talked to the robot about the famous "Death Car." What I don't love so much is the stuttering and the bugs upon bugs. I'm willing to put up with them, though, because everything else has been pretty good so far.
I did a pure Hardcore mode run-through of my first playthrough of New Vegas. When I experienced the 'black hole' bug in the Locked Subway Tunnel near the Boomer compound, I about died laughing.
Basically before the major patch (this is on the 360 for those interested), when you tried to climb the stairs in the tunnel, you
fell through the planet for a minute until you end up teleporting to the other end of the tunnel. it was so great.
also unrelated: I recently re-re-re-re-picked up Broderbund's old classic 'The Ancient Art Of War At Sea', which is an amazing naval warfare simulator focusing on the Age of Sailing Ships (so no battleships, cruisers, aircraft carriers, and submarines, for example). It features such classic naval figures as Horatio Nelson, John Paul Jones (father of the American Navy), Thor Foote, Blackbeard, and so forth. It's not the prettiest game, but it's definitely something which you need to pay attention to tactics and otherwise really plan things out.
I quite enjoy it. I also have the manual for it, which is probably over a hundred pages long, due to flavor text and art and other goodies. Quality work.
I kind of miss Sid Meier's 'Pirates!' which was also great. It makes me want to run a 3.X (or even 2.0!) (A)D&D game focused around naval warfare and sailing.