Mikkeller's Beer Geek Brunch Weasel - a stout brewed with civet coffee - is my all-time favorite beer, and I know a thing or two about beer. If you're any kind of beer lover, Mikkeller's beers are not to be missed.
It's also worth visiting a Mikkeller bar. They have a number of small-run beers on tap and those get rotated frequently. I once had a pilsner that he managed to pack 10% ABV into while still making it taste good.