I blame Bill Murray for my hangover. After hearing that the iconic actor would be bartending at his son's restaurant, 21 Greenpoint, on Friday night, I figured I'd give him a shot. Turns out, he ended up giving me a few too many. I waited anxiously in line among dozens of screaming super fans — one couple proudly left work early and donned T-shirts with Murray's face on it; another clad in makeshift "Ghostbuster gear." As soon as I got inside the restaurant, I snagged a glass of Prosecco and weaseled my way to the front of the jam-packed bar, where I refused to move until my next drink...