Fallout: New Vegas.
Fun game in all, pretty much a straight continuation in gameplay and mechanics from FO3, but once again it shows Bethesda/Obsidian does not learn from past mistakes. New Vegas is even glitchier than FO3 before it got all patched up. It's a mess in places, with animation drops, sync issues, timing, false triggers (I love not being able to shoot or reload my gun for no reason...)
It's a mess and shows they rushed it out there. I hope they fix it soon, otherwise it's almost too messy to play.