So I went to Drink for the first time last weekend, and I had a great time! The bartender was a little... intense... but she made some seriously phenomenal cocktails. When our bill came, though, I was faced with a dilemma! The standard "dollar-a-drink" tip hardly seems appropriate, given the elbow grease that goes into each one, but tipping 20% on the bill (as I would at a restaurant) seemed a touch overblown. What do you guys think? How much do you tip, at Drink?