The great amateur filmmaker Sid Laverents passed away last week in a San Diego County hospital, 9 months after celebrating his 100th birthday.  Laverents, best known for his whimsical masterpiece Multiple SIDosis, which was named to the National Film Registry in 2000, was a superstar of the amateur film club scene before becoming widely known among film circles in his 90s.

San Francisco Chronicle obituary

Filmography from Roctober.com