Pete's Bar Rules
Rule #1 : If you've never been to the bar before and you don't plan on returning -- always go for bottles. At least with bottled beer, you know what you are getting... bottled beer is usually a good value... If you think you might return to the bar -- it's O.K. to experiment.
Rule #2: ALWAYS piss before you walk out! Hard to remember when you're fucked up -- but this is important, especially if you live in NYC. Subway tunnels are good places to piss -- just make sure you are clear of the path of the train if you pass out.
Rule #3: If you're in a new bar, locate the alcoholics and see what they are drinking -- that's usually the best deal. But remember you got to have standards... No Rolling Rock.
Rule #4: Anything in a can at a bar is usually A+

Oil cans Fosters or LeBatt Blue

, Old Mill "Tall Boy", Guinness can w/ plastic floater thingy... Pabst Blue Ribbon!
Rule #5: Make sure you use the "correct" names for beers... otherwise you will be an easy target. Budweiser is always "Bud" -- Pabst Blue Ribbon is "P.B.R"... etc.