There used to be a cheap Wisconsin beer called Lucky Lager. Even though this was before I discovered real beer, that was the only one where I've never been able to finish one can.
And, one of my bad ones: I made a pilsener once that was fine in the bottle, but something got into the keg. You know that taste you get in your mouth when there's a piece of food stuck between your teeth and then it finally wriggles loose? That's what it tasted like. I was brewing with a buddy that day and we ceremoniously marched it, like pallbearers, straight to the compost pile.
And +1 on the pumpkin beers. Also most fruit beers. And don't get me started on jalapeno beers...
