New York: Saranac Black & Tan, Pale Ale, Adirondack Amber
Mass: Samual Adams Boston Ale
Seattle: Red Hook ESB, IPA, Black Hook Porter
San Fran: Anchor Steam
Portland: Henry Weinhardt Private Reserve
Ireland: Guiness, Smythwicks Amber
British Columbia: Moosehead
I like to try the local brews when travelling and have found many nice beers all over the US, especially the Pacific Northwest and the Northeast, but I can't remember the names. The brands above are the ones I regulary buy at the super market. I'll often order Guiness on draft when I go out. So far the only European country I've visited is Ireland but if I ever get to Belgium I'll be delighted to tour the land of beers.
Sean