Originally Posted by Lockjaw

No. no no no no no no a thousand times no.
Nothing will get you laughed at more than going in doing the same routine the hot pop star is doing in his videos. The dudes trying to do their best Backstreet Boy impersonation would get laughed off the dance floor.

Just get into the music. Loosen up. More than your arms and shoulders will move. Move those legs but just stay in rythm. Hell turn on the radio when you are at home and just dance around.
Oh and don't be scared to break it down every now and again. Like when a song has a distinct bassline and a distinct rythm switch to dancing to the bassline and switch back.
If you can just flow from position to position smoothly and switch up into some variety here and there you really don't have to be able to be a great dancer but everyone will think you are.