Liz Lemon's wedding day wouldn't be complete without an appearance by her ex-boyfriend Dennis Duffy. That's right, Dean Winters will return as the Beeper King in the November 29 episode of "30 Rock," the one being billed as Liz Lemon's (Tina Fey) wedding to Criss Chross (James Marsden).
In the appropriately titled "Mazel Tov, Dummies!" NBC says Liz and Criss have an encounter with Dennis Duffy that prompts them to take "drastic measures to start a family." Meanwhile, Jack (Alex Baldwin) and Jenna (Jane Krakowski) evaluate their own self-worth and Tracy (Tracy Morgan) deals with a "shocking" medical diagnosis.
Check out photos from "Mazel Tov, Dummies!" below: