I don't think I could honestly pick a favorite, so many have been incredible. But here are a few of the best:
A 12.1% Bourbon Vanilla Rye Imperial Stout. Aged on charred oak, 10yr bourbon, Madagascan vanilla beans. On tap now. Lucious mouthfeel, complex flavors, no booze at all.
Bohemian Pilsner I made last summer. Double docotion brewing process, all Saaz hops. Stunning Pils! Brewing up another pils in two weeks with all my new, fresh 16' Leaf hops (Saaz, Tradition, Mittelfruh and Tettnanger).
My NE DIPA from a few months back... I would put it up against any Tree House, Trillium, Etc... It was heavy on Nugget hops, but of course has juicier varieties as well. Currently have a NE Pale fermenting now, primarily Citra/Galaxy hops and shaping up to be just as good or even better at half the ABV!
I had two similar porters that were both awesome, about 5% ABV. Hint of smoked malt for complexity, drank a lot bigger than what they were. One was a tweak of the first (basically adding a touch more roast character), but I think third time will nail exactly the profile I am after, creating a recipe directly in between these two.
My Schwarzbier and Cream Ale are also notable mention.
All my beers are original recipes, never cloned or rebrewed anyone elses beers.
Too many to choose though... I have only have two or three beers that I didn't care for (two hefeweizens and a brown ale). Hefe's just didn't pop or get the flavor profile I was after, while the brown ale was just muddled, I believe due to yeast stress (accident!). Otherwise, love nearly every beer I put out with just a few exception.