Bill [On his best prank]: Since I did the license plate prank, I would say that's the best one. For those of you who don't know, Zach is embarrassed by his celebrity. So, I put license plates on his car that said "TV DOC" and had dollar signs around them. He didn't notice until days later at a restaurant valet stand, when everyone was looking at him like he was a complete tool. I feel retribution is coming this year.