Well, that depends on what type of beer you like
Malty ale? Hoppy ale? Dark stout? Light (Pilsner or lager)?
I like India Pale Ale or "IPA" (Lagunitas, Dogfish head, Stone, Deep Ellum) but it ain't for everybody. IPA is "hoppy", which means they use a lot of hops in the brewing process. Gives it a citrusy, but somewhat bitter flavor. IMO the American craft breweries are the best in this category.
If you like "malty" which is smooth, sweeter, less bitter, I like the British ales the best. Bass Pale Ale and Belhaven Scottish Ale are probably my favorites
If you prefer the lighter stuff, try pilsner urquel or Czeckvar (sp?). Both good Czech Pilsner beers..