I don't like American beer much. I normally drink Newcastle, Hienekin, or Dos Equis. I like to try all kinds of beer though. Some of the microbrew's in America rock though.
I've have Moosehead once, and it was a really nice beer. Only other Canadian beer I've had (that I know of) was La Fin Du Monde by Unibrow(I think). That was defanately an interesting beer, but in a good way.