For a generation of Canadians, he was the soothing TV voice that proffered recipes involving products such as Kraft Jet-Puffed Marshmallows and Miracle Whip.

The voice of Kraft foods from the '70s and '80s, Len Carlson died Thursday of a heart attack at age 68. He was one of the country's most prolific voice actors.

Carlson was the narrator in the popular Canadian cartoon Rocket Robin Hood, the voice of several Marvel cartoon characters including Captain America and Spider-Man's enemy The Green Goblin, and the voice of Bert Raccoon in CBC's The Raccoons.

"He was very physically active, so his death was a shock," said his agent Richard Menich. Menich said Carlson began as a pro athlete, a running back for the Saskatchewan Roughriders and a pitcher for the minor League Seattle Pilots. He turned to acting after injuries ended his sports career.

Carlson was a voice character in two YTV series still in production, Atomic Betty and Cyberchase.

The actor is survived by his wife Judy and daughter Corrine. Funeral services will be held Tuesday at Marshall Funeral Home in Richmond Hill.