Christopher Knight

The Last Sharknado: It's About Time

2018

Grandpa Clarke

Letting Go

2012

The Boss

Celebrity Ghost Stories

2009 — 1 episode

Celebrity Family Feud

2008 — 1 episode

Himself

Fallen Angels

2007

Belmont

Dirt

2007 — 1 episode

Rachael Ray

2006 — 1 episode

My Fair Brady

2005 — 26 episodes

The Brady Bunch 35th Anniversary Reunion Special: Still Brady After All These Years

2004

Himself

The Surreal Life

2003 — 58 episodes

Less Than Perfect

2002 — 1 episode

That '70s Show

1998 — 1 episode

The View

1997 — 1 episode

Nowhere

1997

Mr. Sighvatssohn

E! True Hollywood Story

1996 — 1 episode

The Doom Generation

1995

TV Anchorman

New York Undercover

1994 — 1 episode

Good Girls Don't

1993

Montana

The Bradys

1990 — 6 episodes

Peter Brady

A Very Brady Christmas

1988

Peter Brady

Day by Day

1988 — 1 episode

Masquerade

1983 — 1 episode

The Brady Brides

1981 — 3 episodes

The Brady Girls Get Married

1981

Peter Brady

Valentine Magic on Love Island

1980

Jimmy

Joe's World

1979 — 9 episodes

Steve Wabash

Diary of a Teenage Hitchhiker

1979

Nick

Just You and Me, Kid

1979

Roy

CHiPs

1977 — 1 episode

The Brady Bunch Hour

1977 — 8 episodes

Peter Brady

The Bionic Woman

1976 — 1 episode

One Day at a Time

1975 — 1 episode

Happy Days

1974 — 1 episode

The World of Sid & Marty Krofft at the Hollywood Bowl

1973

Brady Bunch Kids, The

ABC Afterschool Special

1972 — 1 episode

The Brady Kids

1972 — 27 episodes

Peter Brady (voice)

The ABC Saturday Superstar Movie

1972 — 20 episodes

Peter Brady

The Brady Bunch

1969 — 68 episodes

Peter Brady, Arthur Owens

Mannix

1967 — 1 episode

Another World

1964 — 239 episodes

Leigh Hobson

Gunsmoke

1955 — 1 episode