Kuchar made nearly 220 films and video using shoestring budgets from the 1950s through the underground film boom of the 1960s.
"He was a goofball and a genius," said film historian Eddie Muller. "He was like the greatest filmmakers -- in a single moment he could size up a person and know how to use that in his art."
Kuchar's best-known production was "Hold Me While I'm Naked." The Times said the story of an actress who storms off a movie set due to her repeated nude scenes is regarded as an underground classic that raises questions about artists and how they handle the demands of their art.
Kuchar became an instructor at the San Francisco Art Institute in 1971 where he presided over classes with off-the-wall titles such as "AC/DC Psychotronic Teleplays" and "Electro-graphic Sinema."