Isaac Dorfman

Bill Tannery

Ray James (1 episode)

Boris

Professor Max Bloom (3 episodes)

Simon

Walter Sullivan

Monty

Donald Simpson

Simon

Greydon Lake

Jim Avery

Hal, Kit's Agent

Sen. Lassetter

Jack Skolnick

Lawyer (1 episode)

Norman Bassett

Frank Askoff (2 episodes)

Jimmy Wexler (1 episode)

Mark Radner (1 episode)

Andy Capasso

Dr. Axel Trank

Jason Rudd

Dr. Garrett Braden (13 episodes)

Ex-NYPD Lt. Ed McMasters (1 episode)

Lt. Amos 'Jake' Ballinger (1 episode)

Andrew Bascombe (1 episode)

Ben

Bernie Segal (2 episodes)

Richard Chapman

Dr. Gabe McCracken (1 episode)

Peter Baylin

Detective Flynn

Barney Duncan

Dr. Ben Corcoran

Johnny Campana

Dr. Frank Whitman

Self (1 episode)

Alan Fitch

Self - Nominee (1 episode)

Self (5 episodes)

Self - Co-Host (5 episodes)

Self (2 episodes)

Self (9 episodes)

Anthony J. Petrocelli

Anthony J. Petrocelli (45 episodes)

Self (4 episodes)

John Talbot

Bill Mathison

Kowalski

Tony Petrocelli

Assistant Guru (1 episode)

Mason

Cabby (1 episode)

The Reporter (1 episode)

Al Riccardo