Sez Seinfeld in a statement:
"I was thrilled to be asked to guest star on NBC's hit comedy 30 Rock. I think it's going to be so refreshing for me to be playing myself in a show that has nothing to do with neurotic, dysfunctional New York characters." (That's a joke.)
NBC also came up with a statement from writer/producer/star Tina Fey: "We're very excited to have Jerry on 30 Rock. Finally, my parents have an excuse to watch the show."
Seinfeld's got other business with NBC/Universal. He'll also create and star in 20 live-action comedy "minisodes" inspired by his experiences creating Bee Movie, the Dreamworks animated featured that's coming on November 2nd.
See Seinfield on Rock on Thursday, October 4th at 8:30 ET/PT.