"Drinking out of a martini glass is like swimming laps in a hot tub. There's no way to do it without a lot of liquid winding up all over the place. Try to manage it with one hand and you'll most likely spill unless you brought a level with you. Do it with two hands and you look like a toddler with a sippy cup."
— Jason Kessler, a Los Angeles-based food writer, from a rant against martini glasses on Bon Appetit's Nitpicker blog.