Like Karasu said, the reason why Gaara hasn't pulled any über-cool moves is because no one so far has been good enough to force him to do anything but stand around. That's not to say that I think Gaara's Shield of Sand or Desert Graveyeard are uncool - in fact, I think they are the coolest moves in the series. You people shouldn't think for a second that Gaara is a birdboned little nothing, because he isn't. If an opponent is worth it, he will probably pull off some amazingly cool jutsus. Just because Lee couldn't force him into doing so doesn't mean he can't do it at all. >_>