Dick Van Dyke

Self

Tichina Arnold

Self - Performer

Beth Behrs

Self - Performer

Joelle 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