Which actor played Dr. Leo Spaceman on 30 Rock?

Chris Parnell played Dr. Leo Spaceman on 30 Rock. The character is the hilariously unreliable physician associated with NBC and its executives, delivering absurd medical advice with complete confidence.

Dr. Spaceman is written as a parody of television doctors and corporate “experts.” He often makes grand claims, misunderstands basic medical ethics, or promotes questionable treatments while maintaining the polished manner of a respected professional. His appearances work especially well because the other characters frequently treat his outrageous statements as if they were ordinary workplace guidance.

Parnell’s performance is also notable because he had a strong comedy background before and after 30 Rock. He was a Saturday Night Live cast member from 1998 to 2006, then became widely recognized for voice roles such as Cyril Figgis on Archer and Jerry Smith on Rick and Morty. Dr. Spaceman is sometimes mistaken for a recurring character played by another former SNL performer, but Parnell is the actor credited with the role throughout the series.