I really do not have a favorite beer. I try to stay local - or at least in state.
I do have a favorite cheap beer though. Full Sail Session Lager. Generally priced about the same as the large domestic swill (Bud, Miller), but way, way better.
Too many good ones that I haven't even tried yet. I have always tended to Ales over lagers and IPA's in particular. Whenever I'm in a new area I seek out a local IPA to try. I do like Dogfish 90 min IPA if there wasn't a local one or Sierra Nevada Torpedo. Given that Laganitas is now owned by Heineken I guess I shouldn't consider it a local anymore