Help Remembering A Show

[calliopes_pen]

A few minutes ago, I remembered a show I used to watch on Nickelodeon. I want to look it up through IMDB, but I can't think of the name. It involved a school bully, who sent some poor nerd up the flag pole. The bully sees a bum in an alley, and the bum transforms him into a dog. He's trapped as a dog--and the nerd he tormented is his master. And the only one who can understand him when he talks. (Everyone else hears it as barking.)

And he must do a certain number of good deeds before he can become human again.

Does anyone remember the name of this show?

I have a feeling that the dog/bully's name may have been Eddie. I could be wrong.