I vaguely remember being drunk off my a$$ in college (just once, honest Mom!) and a distributor came in and said he had just lined up a new brewery and he wanted to buy everyone a drink. They rolled in a keg and hooked it up to one of the taps and started handing them out. *Lots* of people didn't finish them, and this was in a college bar around 10PM. So you *know* that stuff was bad.
Worst one I can remember was Dixie Blackened Voodoo. Tasted like a burnt shoe with a hint of old sweatsock, and no body whatsoever. Bought a whole case of it (I'm in PA) and I think I still had 4-5 bottles sitting on a shelf when I moved over a year later.
Was very disappointed with Rogue Dead Guy Ale too, although I'm willing to give it another try sometime. Had it when I lived in Portland, so I don't think it was an issue with travel or storage.