One of my favorite SNL shows was when William Shatner played himself at a Trekkie convention and yelled at all of the folks who came to see him to get a life and move out of their parents's basements. They were just stunned. Then after being reprimanded by the person running the convention, Shatner came back and said he'd been playing his evil Captain Kirk from some episode or the other, and the folks all said " Oh, yeah!". It was hilarious!
William Shatner does "Rocket Man"
Just hadda spread the pain...