I agree, MicroBrews are very regional, however I'll give you a list of some
that I've noticed have a more broad national appeal:
Fat Tire Amber Ale (Co, New Belgium Brewery)
Widmer Hefeweizen (OR, Widmer Brewery)
Sierra Nevada Pale Ale (CA, Sierra Nevada Brewery)
These are not Micros, however they are good beers to carry on tap as well:
Newcastle Brown Ale
Guiness Stout (requires a special set up to be on tap)
Killians Irish Red
All of these I believe could sell well just about anywhere in the U.S.
Cheers!
Josh[at]BarSim.comwww.BarSim.com
The Ultimate Bartending Simulation!