Season Regulars 9

1. 

   Hugh Laurie

   Gregory House

2. 

   Lisa Edelstein

   Lisa Cuddy

3. 

   Robert Sean Leonard

   James Wilson

4. 

   Omar Epps

   Eric Foreman

5. 

   Jennifer Morrison

   Allison Cameron

6. 

   Jesse Spencer

   Robert Chase

7. 

   Peter Jacobson

   Chris Taub

8. 

   Olivia Wilde

   Thirteen

9. 

   Kal Penn

   Lawrence Kutner

Guest Stars 9

1. 

   Anne Dudek

   Amber Volakis

2. Jamie Tisdale

   Penelope

3. Charles Gevoian

   Maury

4. Joey Gaynor

   Len

5. 

   Shelli Boone

   Molly

6. Scott Dawson

   Ballet Master

7. 

   Pamela Shafer

   Company Manager

8. Bobbin Bergstrom

   Nurse

9. Alex Schemmer

   Jeremy

Crew 8