Dick Van Dyke
Self
Tichina Arnold
Self - Performer
Beth Behrs
Self - Performer
JoJo Siwa
Self - Performer
Jason Alexander
Self - Performer
'Weird Al' Yankovic
Self - Performer
Amanda Kloots
Self - Performer
Skylar Astin
Self - Performer
Amber Riley
Self - Performer
Rita Ora
Self - Performer
Rufus Wainwright
Self - Performer
Julie Andrews
Self
Lin-Manuel Miranda
Self
Judd Apatow
Self
David Archuleta
Self
Mel Brooks
Self
Carol Burnett
Self
Cedric the Entertainer
Self
Stephen Colbert
Self
Derek Hough
Self
David Copperfield
Self
Darren Criss
Self
Ted Danson
Self
Roma Downey
Self
Brad Garrett
Self
Mark Hamill
Self
Jenny McCarthy-Wahlberg
Self
Tony Hawk
Self
Ken Jeong
Self
John Lithgow
Self
Rob Reiner
Self
Craig Robinson
Self
Jane Seymour
Self
William Shatner
Self
Martin Short
Self
Harry Shum Jr.
Self
Mary Steenburgen
Self
Stanley Tucci
Self