Have not read any of this thread, but based on the topic name the answer would be: Depends.
It really depends on how drunk you are, and what game you're playing (at least for me). If I have had a beer or two and am playing a FPS I get a tad better, but if I've had say 12 beers and playing a FPS I start to suck, a lot. Although at the same time, the game become 250% better once I've had about 12 beers.
In my experience most games that don't have much of a storyline to pay attention to, and are pretty much just skirmishes/random battle are almost always better with alcohol. Although if you need to pay attention to some sort of a storyline, I have found you lose some of it while drunk.
Final conclusion, alcohol makes 60% of recent games at least 150% better. =D