Debra Messing Julia Houston Actor Christian Borle Tom Levitt Actor Katharine McPhee Karen Cartwright Actor Jack Davenport Derek Wills Actor Megan Hilty Ivy Lynn Actor Anjelica Huston Eileen Rand Actor Leslie Odom Jr. Sam Strickland Actor Jeremy Jordan Jimmy Collins Actor Krysta Rodriguez Ana Vargas Actor Andy Mientus Kyle Bishop Actor Kathie Lee Gifford Guest Star Jesse L. Martin Guest Star Steven Spielberg Executive Producer Craig Zadan Executive Producer Neil Meron Executive Producer Darryl Frank Executive Producer Justin Falvey Executive Producer Marc Shaiman Executive Producer Scott Wittman Executive Producer Theresa Rebeck Executive Producer David Marshall Grant Executive Producer