I really like their IPA when it is fresh. It really doesn't do well with age. They don't bottle date, so I'm always scared to buy it.
I also like the pale ale, but it is hard to find around here.
The Lagunitas Sucks was nothing short of epic. Fantastic beer.
I just tried the Imperial Red as well. Really liked that. I also enjoy most of their limited releases. WTF is really good.
Did not like that Doppel Weizen, and I find the Cappuccino Stout to be too sweet.