Shiner Bock in Texas (especially after a Rugby match)
McGuires Irish Pub Stout in Pensacola, Fl. A real aviator's beer...
Almost anything cold at old Trader John's in Pensacola. There were many real "tailhooker's beers" back then. (Excepting, of course, Bud and other American p*ss beers). However, come to think of it, after the nurse's uniforms started flying off (back when they were all women, of course) I think even the Bud tasted... well.... no... it still tasted like bad tap water.
200 microbrews in America that would best anything in a Brit or Irish pub? Me thinketh nay!
...none of the above, and nothing in America, can touch REAL Guinness.