That's a pretty big score to nad a Robin Williams for a guest stint on a cable network show that doesn't really have a big following at all. I'm guessing Elijah Wood called in some big favors to make it happen. As for his role in this episode, it was a pretty big and satisfying inside joke when he starts reciting "it's not your fault....it's not your fault....it's not...." from Goodwill Hunting. Also, he was kind of playing an older version of Patch Adams as well. Also, they had Steven Weber in this one as well as Allison Mack, Rob Riggle and Brian Baumgartner, better known to the world as Kevin from The Office.