IMO Todd Leopold nailed it.whoa...things you never thought of.
Robin Williams and The Dark Side...of Comedy
"(CNN)- By tradition, Drama is represented by two masks: the happy face of the comic muse Thalia and her sad counterpart, the tragic muse Melpomene.
If Drama were Robin Williams, you'd need a million more.
He was a mask of howling laughter, a mask of wide-eyed innocence. A sneer. A frown. Even, at times, a blank.
If it seemed like we knew what went on behind the many masks, it was because Williams' quicksilver mind and boundless talent possessed enough energy to blow them right off his face. He WAS Mork. He WAS Adrian Cronauer of "Good Morning, Vietnam." He WAS Patch Adams, and "Aladdin's" genie, and Mrs. Doubtfire.
But he was also the restrained Garp in "The World According to Garp," and the creepy Seymour Parrish in "One Hour Photo," and the firm but compassionate Sean Maguire in "Good Will Hunting," the performance that won him an Oscar.
It was that side of Williams -- something raw and vulnerable, not something manic and boisterous -- that made you wonder: who was he when he took off the mask?....."