I actually cried a bit when I heard this. I don't remember which it was that broke me-- the tweet from the Academy that said "Genie, you're free" or the plethora of Dead Poets Society quotes that seem to have barraged me...
Depression is a terrible disease that has affected everybody in some capacity, including me. It's a shame that it took him too, but "the powerful play goes on and you may contribute a verse". Robin Williams sure wrote a fantastic verse.
/end blubbering rant/