If you have Rock Band/Guitar hero and a few friends, that when drunk can be a good laugh. The more drunk you get, the better you become (in your head at least). Although you usually have to lower the difficulty as bombing a song after 30 seconds because you all have no coordination is pretty embarrasing.
I used to play Unreal Tournament when drunk and I noticed I'd completely zone out and then regain concentration like 2 hours later with really sore eyes because I'd slipped into a trance just leaping about and killing people.