Robin Williams as Parry

Jeff Bridges as Jack

Amanda Plummer as Lydia

Mercedes Ruehl as Anne

Michael Jeter as Homeless Cabaret Singer

William Jay Marshall as Jamaican Bum

Chris Howell as Red Knight

Adam Bryant as Radio Engineer

Paul Lombardi as Radio Engineer

David Hyde Pierce as Lou Rosen

Ted Ross as Limo Bum

Lara Harris as Sondra

Warren Olney as TV Anchorman

Frazer Smith as News Reporter

Kathy Najimy as Crazed Video Customer

Harry Shearer as Sitcom Actor Ben Starr

Melinda Culea as Sitcom Wife

James Remini as Bum at Hotel

Mark Bowden as Doorman

John Ottavino as Father at Hotel

Brian Michaels as Little Boy

Jayce Bartok as First Punk

Dan Futterman as Second Punk

Bradley Gregg as Hippie Bum

William Preston as John the Bum

Al Fann as Superintendent

Stephen Bridgewater as Porno Customer

John Heffernan as Stockbroker Bum

Richard LaGravenese as Strait Jacket Yuppie

Anita Dangler as Bag Lady

Mark Bringelson as Drooler

Johnny Paganelli as Pizza Boy

Diane Robin as Receptionist

Benjamin Redman as Motorcyclist

Lisa Blades as Parry's Wife

Christian Clemenson as Edwin

Carlos Carrasco as Doctor

Joe Jamrog as Guard

John de Lancie as TV Executive

Lou Hancock as Nurse

Caroline Cromelin as Radio Show Call-In (voice)

Kathleen Bridget Kelly as Radio Show Call-In (voice)

Pat Fraley as Radio Show Call-In (voice)

Mel Bourne as Langdon Carmichael (uncredited)

Kristen Connors as Ballroom Dancer (uncredited)

Jack Mulcahy as Passerby (uncredited)

Tom Waits as Disabled Vet (uncredited)

Craig 'Radio Man' Castaldo as Bum (uncredited)