Buscemi will be reprising his role as private detective Len Wosniak, which he had played on the show previously. The episode will air on February 16.
The actor won the Golden Globe for his work in Boardwalk Empire. His theater credits include the original Off-Broadway production of The Exonerated.
30 Rock stars Tina Fey, Alec Baldwin, Tracy Morgan, Jane Krakowski, and Jack McBrayer.