It seems the Vulcan Salute is another one.
What's bad though is when a Vulcan cannot do the hand gesture. The new Mr. Spock, Zachary Quinto, in The Star Trek movie cannot. He either had to have his hand positioned the right way before the camera shot or skin glue was used if it was the middle of the shot.
What was the eye opener for me was to discover that William Shatner could not do the gesture either. Conan O'Brien discovered this during his Tonight Show.
Can you do the Vulcan Salute? May you live long and prosper.