Mandy Moore

Keira Knightley

Elle MacPherson

Wynonna Judd

Amanda Bynes

Lee Ann Womack

The Sopranos' Steve Schirripa

Jon Favreau

Rob and Amber from Survivor

Carla Gugino & Elisabeth Hasselbeck

Tom Arnold

Shania Twain

Niecy Nash

Andie MacDowell

Sarah Jessica Parker

Rachael Ray

Selma Blair

Matthew Modine

Rent's Anthony Rapp

Gastineau Girls

Isaac Makes You Fashion Fabulous

Madonna

Finola Hughes

Isaac and the City

Sela Ward

60 min

Rob Morrow

Cynthia Nixon

Nia Long

Bo Bice & Shannon Elizabeth

Margaret Cho

Michael Moloney

Kimora Lee Simmons

Isaac's Glamour Girls

Iman

Isaac Strikes Again

Rosie Perez

Lisa Loeb

S. Epatha Merkerson & J.C. Chasez

Gabrielle Union

Isaac's It Girls

Jamie Lynn Sigler

Gina Gershon

Huey Lewis

Tony Danza

Isaac's Famous Friends

Isaac's TV Darlings

Isaac's Celebrity Field Trips

Keira Knightley

Selma Blair

Niecy Nash

Finola Hughes

Madonna

Gastineau Girls

Lisa Loeb

Jamie Lynn Sigler