Kevin Nealon (Weeds, Saturday Night Live), is one of the best talk show guests. He's always a lot of fun and of course, has as great sense of humor.

Tonight on Conan O'Brien's show, he had Conan sign his name on a huge piece of paper. This was after Conan mentioned the fact that Nealon liked doing cartoons. Nealon explained how he loves doing this with peoples names.

He took the signature of Conan, and held it up in different directions -- and then as the name was sideways, used the letters in his name to draw facial features. It ended up being a caricture that looked a lot like Conan. All with his signature in the middle. It was awesome, and Conan was impressed.

When Nealon went to do one with sidekick Andy Richter, I thought he was just going to make his name the round part of his heavy-set body. I guessed the punchline slightly wrong. He looked all around the name, saying "Okay, wait...I think I can see it here."

He then made a round head, with a smiley face, and just crossed out the name completely, making a body out of that.