I had the NotYourFathersRootBeer at the MN state fair this past weekend, better than I expected. Was dangerously good, but more than 2-3 and gutrot is sure to follow.
I had some other weird beers, a smores beer with a marshmallow and chocolate rim(meh, more of a gimmick), but I had a donut beer with cinnamon and sugar around the rim(FUCKING AMAZING).