Bet you didn't know that Dennis had a brief but successful career as a musician in the early 80's. Yep, you read that correctly.    Check out this song that charted #1 in 1981. The song is called "Shaddap You Face." While Dennis may not be the real singer of the song, you can picture him singing it if you listen to it with your eyes closed. Here is the original song, "Shaddap you Face" by Joe Dolce.