Board Thread:General Discussion/@comment-4287993-20140617142301/@comment-5278765-20140617145638

Most networks won't let you work on another network if you're under contract with them, even if it's just for one day. I think it's pretty rare for them to allow that.

I actually noticed while watching the opening credits for the episode that he was listed there. And I was really excited to see him again after all this time. He was always so much fun.