Paula Abdul

Character: Self

Chris 'Daddy Mac' Smith

Character: Self

Chris 'Mac Daddy' Kelly

Character: Self

Mayim Bialik

Character: Self

Michael Bolton

Character: Self

Kadeem Hardison

Character: Self

Céline Dion

Character: Self

Maurice Davis

Character: Self

Shanice Wilson

Character: Self

Mat Plendl

Character: Self

Mary-Kate Olsen

Character: Self

Ashley Olsen

Character: Self

Kevin Clash

Character: Self

Woody Harrelson

Character: Self

Melissa Etheridge

Character: Self

Cheryl 'Salt' James

Character: Self

Sandra 'Pepa' Denton

Character: Self

Randy Newman

Character: Self

Sheila E.

Character: Self

Bobby McFerrin

Character: Self

Gerardo Mejía

Character: Self

Peter Alsop

Character: Self

Patti LaBelle

Character: Self

Neil Patrick Harris

Character: Self

Jason Priestley

Character: Self

Ted Danson

Character: Self