Season Regulars 6

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

Guest Stars 13

1. 

   Greg Grunberg

   Ronald Neuberger

2. 

   Howard Hesseman

   Henry Errington

3. 

   Adam Busch

   Tony

4. 

   Keri Lynn Pratt

   Amy Errington

5. 

   Yvette Nicole Brown

   Ellen Stambler

6. Stephen DeCordova

   Chief Surgeon #2

7. 

   Jean St. James

   Cecile

8. Noel Conlon

   First Table East

9. 

   Susan Grace

   First Table North

10. 

    Marcie Lynn Ross

    Second Table West

11. 

    Craig Patton

    Second Table East

12. Bobbin Bergstrom

    ER Doctor

13. 

    Ron Perkins

    Dr. Ron Simpson

Crew 5