Kate -- "The Rubik's Rube": I always find myself nerding out with guys. The fact that I can finish a Rubik's Cube in two minutes helps with that. Not that I would ever demonstrate at a bar. It just gives me good nerd cred. Also, I had a friend who had the best flirting technique ever: wear a Metallica shirt. Seriously, every guy you see will start talking to you. It's like the guy I saw wearing a "Beverly Hills, 90210" shirt at a bar the other night. I was far from the only girl to want to discuss the show with him.