weez- there is no way coolkid is cheyenne jackson. If he was, the proper etiquette for approaching coolkid wouldn't be acknowledging your respect for his work briefly and leaving with a kind word, it would be bowing in awe of his overwhelming hotness and trying not to faint. When the show is over, you may proceed to throw yourself onto the floor so he can walk on your back and thus the soles of his shoes will not have to touch the floor. Once he picks up the phone to call the nearest psychiatric hospital or the police, you know its time to leave. :]
For all other actors/ famous people, taking the advice of allofmylife is probably the way to go.
"Perhaps, when we remember wars, we should take off our clothes and paint ourselves blue and go on all fours all day long and grunt like pigs."
Kurt Vonnegut, Cat's Cradle