Robert Downey Jr.
Harry Lockhart
Michelle Monaghan
Harmony Faith Lane
Corbin Bernsen
Harlan Dexter
Shannyn Sossamon
Pink Hair Girl
Indio Falconer Downey
Harry Age 9
Ariel Winter
Harmony Age 7
Duane Carnahan
Chainsaw Kid
Martha Hackett
Pistol Woman
Nancy Fish
NY Casting Woman
Tanja Reichert
B-Movie Actress
Stephanie Pearson
Teen Harmony
Christopher Gilman
Protocop
Brendan Fehily
Local News Reporter
Judie Aronson
Gift Bag Girl
Wiley M. Pickett
Homicide Cop
Bobby Tuttle
Hotel Concierge
Daniel Browning Smith
Rubber Boy
Teresa Maria Herrera
Newswoman
Kathy Lamkin
Woman in Hospital Blues
Evan Parke
Dexter Clinic Guard
Ben Hernandez Bray
Dexter Goon
Harrison Young
Harmony's Dad
Laurence Fishburne
Bear in Genaros Beer Commercial (voice) (uncredited)
Deanna Dozier
Kristin (uncredited)