On the Monday, April 9 episode of NBC's Smash, Broadway star Christian Borle led the cast in "Don't Say Yes," a musical number in which he portrayed the famed Hollywood mogul, Darryl Zanuck.

The series, which looks behind the scenes of the making of a Broadway musical about Marilyn Monroe, is co-created by playwright Theresa Rebeck and has original songs by Tony Award winners Marc Shaiman and Scott Wittman.

The cast features Debra Messing, Jack Davenport, Anjelica Huston, Megan Hilty, Katherine McPhee, Jaime Cepero, Raza Jaffrey, and Brian d'Arcy James.

Borle is currently starring on Broadway in Peter and the Starcatcher at the Brooks Atkinson Theatre. His many other credits include Legally Blonde and Thoroughly Modern Millie.