I'm A Maniac, Maniac, On Tha Floor
I bust out the moves when I'm alone- I'm talkin the Roger Rabbit, The Sprinkler, The Searchlight, Pickin' Up Change, The Worm (ok I can't do the worm), etc, etc, etc! It's fun, it releases stress, and it's (relatively) safe. My girlfriend will come home and I'll be all breathless and sweaty and she's like, "Um... what were you doing?"
If I get drunk enough, I dance at the club, but mostly I'm that weird quiet chick at the bar drinking a Landshark and watching everyone else bust moves.