Weird for such a top comedian that his best films were his non comedic films
William's was a genius, one of the funniest men to have ever lived. But for me his greatest performances and films were his non comedy roles. The guy was trained as a serious actor, but it still blows my mind that he easily put on Oscar worthy and winning performances but seen as a comedic actor by many.
For me his best films and performances
Good Will Hunting
Dead Poets Society
Good Morning Vietnam
Awakenings
One Hour Photo
The Fisher King
Insomnia
The World According to Garp
Of course he had some comedy roles that rocked, like Mrs Doubtfire amd The Birdcage come to mind. But his best films were his more serious work.