So sad for such a funny man.
Check it out:

Robin Williams, a brilliant shapeshifter who could channel his frenetic energy into delightful comic characters like “Mrs. Doubtfire” or harness it into richly nuanced work like his Oscar-winning turn in “Good Will Hunting,” died Monday in an apparent suicide. He was 63.

Williams was pronounced dead at his San Francisco Bay Area home Monday, according to the sheriff’s office in Marin County, north of San Francisco. The sheriff’s office said the preliminary investigation shows the cause of death to be a suicide due to asphyxia.