Missed this thread!
My favs in no particular order.
Guinness
Bells Oberon
Sam Adams (never on tap though, tastes funny to me)
Goose Island 312
Rolling Rock (if I'm feeling cheap)
Leine Red
If I'm at the bar I'll usually drink Miller or Coors because I'm broke and real beer gets expensive quick. I could just drink less though......
Blue Moon is good, too. Never buy it because I can find Oberon pretty easy and it's way better.