Be yourself, but make sure you get out and do lots of stuff.
Do stuff you like (dance, bike, surf, skate, drink, etc.).
Meet with your Facebook/MySpace/Friendster friends IRL (most groups have meet-ups).
If the girl/boy(/other) you like doesn't like your hobbies, it isn't going to work out. Don't hide who you are.
And, if all else fails, there is always
Craigs-List. (j/k, but check out that link).