Spontaneous human combustion (SHC) is a scientifically unsubstantiated hypothesis that suggests the burning of a person's body without an external source of ignition. Although there is much speculation and controversy over SHC, it is not a proven natural occurrence.
Linda Purl who played Charlene Matlock on the Matlock TV show was in every episode of the first season except episode #14, The Rat Pack. Her former husband from a very short marriage, Desi Arnaz Jr. was guest-starring on that episode.
UPDATE 3: Joseph Matlock, who performed under the name Joey Casio, has been confirmed as one of the 36 people who died in the Oakland warehouse fire, SFGate reports. Matlock was 36. The artist/producer recorded singles for K Records in Olympia, WA, where Matlock once lived.