John Billingsley

as Alvin Kapitski

as Professor West

as Kurt

as Jacob Nolston

as Terrence Steadman

as Stan Jacobson

as Ellis Mars

as Hugh Rollins

as Timothy 'Timmy the Geek' Landau

as Dr. Edward Harkness

as Kevin Scott

as Dr. Drew

as Mr. Rothman

as Harry

as Doctor Ben

as Jackson Scott

as Harvey Larson

as Mike Spencer

as Mike

as Simon Coombs

as Eugene Goodman

as Michael Latham

as Bill Weston

as Lloyd

as Jerry

as Cambis Borrin

as Paul Cydon

as Chae

as Dr. Stewart

as Mr. Remmy

as Doug Ouellet

as Abbie's ObGyn

as Boring Man

as Driving Instructor

as Dr. Henklefust (voice)

as Office Manager

as Dr. Royce

as Phlox

as Lie Detector Coach

as Judge Brent Gordon

as Roger Halsted

as Cecil Arthur

as Dean Randolph

as Barry

as Dr. John Fallow

as Heidecker

as Ben White

as George Marks (2005)

as Coswell

as Dr. Lloyd Madden

as Paramedic

as Father Reilly

as Dr.Mize

as Buddy

as Tom Newman

as Professor Staggs

as Bruce Hendricks

as Harry

as Dr. John Lehman

as Harry

as Alan

as Mitchell Blair

as Dr. William Crispin

as Kenny

as Patient

as Mr. DeLarge

as Dr. Bernard Weiss

as Peter Garfield

as Phil

as West Waters

as Wendy Jenkins' Boss

as Robert Walton

as Watson

as Jeff

as Timothy Gipson

as Eddie Dagabosian

as Mr. Swindell

as Robert Schmidt

as Inspector Hotchkiss

as Russo

as Judge Joseph Holt

as Dr. Klein

as Delivery Guy

as Prof. James Kellogg

as Daniel Foote

as Bebe's Attorney

as Harrison McKendrick

as Brady

as Clifford

as Gordon

as Simms (segment "The Wall")

as Sam

as Edwin Shaw

as Norman Miller

as Dogcatcher Doyle

as Malcolm Eddery

as Langdon

as Lloyd Zane Miller

as Himself

as Jonah Henry

as Self

as Barto's Doctor

as Male Curlisha

as Bum

as Prof. Miles Ballard

as Headmaster

as Andrew Gindes

as FBI Agent #1

as Ira Grossman

as Egan Foote

as Edward Duke

as Dr. Andrew Pike

as Brad

as Lee

as Doug

as Technician

as Linus

as Irate Driver

as Mr. Jensen

as Self

as Father Alfred McKavee

as Officer Jenkins

as Chunky

as Self

as Self

as Mr. Snow

as Hammond

as Himself

as Phil

as Dr. Phlox

as Mr. Williams

as Dr. Phlox

as Dr. Phlox

as Sulphur John

as Self