Hamm, Winters returning to '30 Rock'

Jon Hamm, Dean Winters and Jason Sudeikis will reprise their guest starring roles on an upcoming episode of 30 Rock.

The instalment, slated to air February 11, features Liz (Tina Fey) getting a root canal on Valentine's Day, reports Zap 2 It.

It is suggested that the anaesthetic Liz takes for the procedure will provoke a hallucination involving the three actors, who have all played her beaus in the past.

The episode will also feature Role Models star Elizabeth Banks as a CNBC host who goes out on a date with Jack (Alec Baldwin). According to Entertainment Weekly, the 35-year-old actress has been recruited for at least four episodes.

30 Rock airs Thursday nights on NBC.