Good Burger Easter Egg - Awesome Cameo

I just viewed the movie "Good Burger" and have discovered an awesome cameo.

The cameo happens when Ed and Dexter are on the roof of Good Burger and a dog starts barking at them. Ed says the dog is saying that there are four clowns who have a broken car and that they sent the dog for help. A few minutes later, we see the clowns with their broken car. The head clown says "Where is that dog?!" The head clown is none other than cleverly disguised Kevin Kopelow, the writer of "Good Burger" and the show which "Good Burger" comes from, "All That".