Reminds me of Stone's Russian Imperial Stout. Creamy mouth feel, slight chocolate flavor (okay, Stone's had a strong chocolate flavor, but go with it).

Our party agreed on one thing about this beer: while some beers have a succession of flavors that pass over your tongue, Allagash Black has only one experience. Not to say that there's only one flavor, just that there's no early taste and after-taste. Everything you're going to taste in the beer is there when it first hits your tongue, and doesn't change after it leaves. Kind of a weird experience, actually.