Len Janson
WritingTotal Credits
32
Acting
4
First Credit
1965
Latest Credit
2004

Tiny Toon Adventures
Writer
1990

The Real Ghostbusters
Writer
1986

My Smurfy Valentine
Writer
1983

Sonic the Hedgehog
Writer
1993

The Smurfs
Writer
1981

Stop Look and Listen
Sunglasses · Director · Writer
1967

The Flintstones: Wind-Up Wilma
Writer
1981

Sonic Underground
Writer
1999

The Smurfs Springtime Special
Teleplay
1982

Isis
Writer
1975

The Smurfs Christmas Special
Teleplay
1982

Boulder Wham!
Story
1965

The Love Boat
Writer
1977

Dumb and Dumber
Writer
1995

Blaze Glory
The Pug-Nosed Kid · Director
1969

P.J. Funnybunny
Writer
1989

P.J.'s Unfunnybunny Christmas
Teleplay
1993

Vicious Cycles
Leader of the Vicious Cycles · Producer · Writer · Director
1967

The New Fred and Barney Show
Story
1979

Solarman
Original Story
1986

Groovie Goolies
Writer
1970

Going Bananas
Screenplay · Creator
1984

The Hanna-Barbera Hall of Fame: Yabba Dabba Doo II
Writer
1979

Little Wizards
Creator
1987

Daffy Duck and Porky Pig Meet the Groovie Goolies
Writer
1972

Benji, Zax & the Alien Prince
Editor · Writer
1983

The Biskitts
Writer
1983

Condor
Writer
1986
The Haunted Heist
Writer
1974
Captain Mom
Actor · Director
1971
MovieSergeant Swell of the Mounties
Director
1972
MovieWacky and Packy
Writer
2004