In the 1950s and 1960s he prospered as a writer primarily on British radio and television. In 1961 he was diagnosed with severe hyperthyroidism, which affected his eyes giving him what was to become his trademark appearance. His American television debut came in the late 1960’s as sketch characters on ‘The Dean Martin Show’ and ‘Dean Martin Presents The Gold Diggers.’ His popularity soared and in 1970 he starred in his own television show called ‘The Marty Feldman Comedy Machine.’ His most famous role came in 1974 when Mel Brooks cast him as Igor (or do you pronounce it Egor) the Hunchback in ‘Young Frankenstein.’ In 1975 he teamed with Gene Wilder in the film ‘The Adventure of Sherlock Holmes’ Smarter Brother’ and in 1976 starred in another Mel Brooks film, ‘Silent Movie,’ a role which earned him a Golden Globe nomination.’ In 1982 he was in Mexico filming the movie ‘Yellowbeard’ when he suffered a massive heart attack. He died in a Mexico City hospital and is buried in Forest Lawn in Hollywood Hills.