He voiced Shaggy on the 1969-1972 TV series "Scooby-Doo, Where Are You!"
The original voice cast featured Don Messick as Scooby-Doo, Casey 
Kasem as Shaggy, Frank Welker as Fred, ..... who stated that he had never seen 
the original television series, gave Scooby-Doo one star (on .... 19691972, CBS, 
25, 2.