Season Regulars 4

1. 

   Eric McCormack

   Dr. Daniel Pierce

2. 

   Rachael Leigh Cook

   Kate Moretti

3. 

   Kelly Rowan

   Natalie Vincent

4. 

   Arjay Smith

   Max Lewicki

Guest Stars 14

1. 

   LeVar Burton

   Paul Haley

2. 

   Jonathan Scarfe

   Roger Probert

3. 

   Paul Ganus

   Assistant S.A.I.C. Tanner

4. 

   Freddy Rodríguez

   Wesley Sumter

5. 

   Jayne Atkinson

   Helen Paulson

6. 

   Jimmy Bennett

   Alex Willingham

7. 

   Matthew Glave

   Senator Scott Ryland

8. 

   Bridget Regan

   Victoria Ryland

9. 

   Glenn Fitzgerald

   Leo Attinger

10. 

    Scott Paulin

    Senator Ted Paulson

11. 

    Allison Smith

    Laura Crane

12. 

    Bob Morrisey

    Senator Ryland's Personal Physician

13. Sherina Mikasa

    Psych Nurse

14. Michael G. Canaan

    Security Guard

Crew 3