I'm with Slim- If you want the ultimate cool, look like you've been there before.
A little fun is okay- the Tebow was kind of cool, but the other- uh,,, no....
Best "celebration" I ever saw was when Tim Brown, the great Heisman receiver/returner from ND ran back a kickoff. When he crossed the goal line he just kind of dropped the ball off behind him with with a flick of the wrist without looking at it and literally walked off the field. It was the greatest "yeah, I've done this a hundred times before" display ever.
That's what I would love to see out of VM.