Many of his roles have been comic (eg. The Birdcage, Mrs. Doubtfire). He has also starred in serious movies (Awakenings , What Dreams May Come) and in 1998 he won an Oscar as Best Supporting Actor for his role in Good Will Hunting.
Robin Williams and his wife Marsha Garces Williams founded the Windfall Foundation, a philanthropic organization to raise money for many different charities. Robin Williams devotes much of his energy doing work for charities, including the Comic Relief fund-raising efforts.
Williams is reported to have bipolar disorder.