Season Regulars 4

1. 

   Tony Shalhoub

   Adrian Monk

2. 

   Ted Levine

   Leland Stottlemeyer

3. 

   Jason Gray-Stanford

   Randall Disher

4. 

   Traylor Howard

   Natalie Teeger

Guest Stars 18

1. 

   Daniel Stern

   Sheriff Fletcher

2. 

   Jeremy Howard

   Bodysuit-wearing UFO Enthusiast

3. 

   Ethan Cohn

   Kyle Larkin

4. 

   Eric Lange

   Goggle-wearing UFO Enthusiast

5. 

   Eric Stonestreet

   Boom Boom

6. 

   Amanda MacDonald

   Female UFO Enthusiast

7. 

   Adam Kulbersh

   Dr. Garcia

8. 

   Barry Livingston

   Geiger Counter Enthusiast

9. David Hadinger

   Segway Enthusiast

10. 

    Jason Rogel

    Satellite Enthusiast

11. 

    Jennifer Riker

    Business Woman

12. 

    Jesse Heiman

    3rd UFO Enthusiast

13. 

    Mathis Fender

    Dickie

14. 

    Rachel Noll James

    Other UFO Enthusiast

15. 

    Tammy Dahlstrom

    Dolly

16. Desiree Brajevich

    Body Suit Wearing UFO Enthusiast (uncredited)

17. Ashley Gibson

    Marge Larkin (uncredited)

18. Jennifer Skiffington

    Body Suit Wearing UFO Enthusiast (uncredited)

Crew 1