Ghostbusters

Dr. Egon Spengler

Stripes

Russell Ziskey

Ghostbusters II

Dr. Egon Spengler

Knocked Up

Ben's Dad

Baby Boom

Steven Buchner

I'm with Lucy

Jack

Walk Hard: The Dewey Cox Story

L'Chaim

The Last Kiss

Professor Bowler

Heavy Metal

Zeke (voice)

Stealing Home

Alan Appleby

Ghostbusters: Afterlife

Dr. Egon Spengler (archive footage) (uncredited)

The Rodney Dangerfield Special: I Can't Take It No More

Self / Various

Cleanin' Up the Town: Remembering Ghostbusters

Self

As Good as It Gets

Dr. Bettes

Orange County

Don Durkett

Groundhog Day

Neurologist

Year One

Adam

Airheads

Chris Moore

Love Affair

Sheldon Blumenthal

The Best of SCTV

Ghostbusters 1999

Self

Richard Lewis: I'm In Pain

Self

Chicago Filmmakers on the Chicago River

Self

Thank You, Del: The Story of the Del Close Marathon

Self

Drunk Stoned Brilliant Dead

Self - Actor / Director (archive footage)

National Lampoon's Vacation

Car salesman (voice) (uncredited)

The Earth Day Special

Elon Spengler

Students of 'The Graduate'

Self

Caddyshack: The 19th Hole

Self - Director

Inside Story: National Lampoon's Vacation

Self

Caddyshack: The Inside Story

Himself

The Yearbook: An Animal House Reunion

Self - Writer

Animal House: The Inside Story

Self

Belushi

Self (archive footage)

Groundhog Day: The Weight of Time

Self

Spacehunter: Adventures in the Forbidden Zone

Voice (Uncredited)

You Had to Be There: How the Toronto Godspell Ignited the Comedy Revolution...

Self (archive footage)

John Candy I Like Me

Self - Head Writer & Actor, SCTV (archive footage)

On the Scene with the Ghostbusters

Students of 'The Graduate'

Himself

Marty, Life Is Short

Self (archive footage)