OK! So I am a super, super, white guy, with no groove. The problem is, there are certain situations, where you NEED groove, aka the club. This video really helped me out:
This one is good too:
Getcho nipples stroked! Just kidding... but seriously, the chest stroke move is fun.
Also, another tip: A fun thing to do when a girl asks you if you want to dance is to say "only if you will do the Carlton with me" (Fresh Prince reference). Every girl knows the Carlton. Then, get onto the floor, start doing it, and teach the girl, and while she's "Carltoning" start dancing normal and give them a weird look. This routine only lasts like a minute or more, no need to just stand there going back and forth snapping your fingers for a whole song. I made this routine up all by myself, it's mah baby.
I am still a crappy dancer, but I am learning, and I don't think girls really care if you're all that and a bag of chips on the dance flo' if your game is solid. Actually, I don't think they really care at all, provided you can at least move. And, if they're real good and start busting crazy moves and break dancing, just stop and stare for 3 seconds,then start moving crazy around them, they'll think it's funny.