A brief perusal of Facebook and Twitter confirms what I initially suspected: everyone under the age of 80 has at least a handful of fond Williams memories. Catapulting to fame in 1978 with Mork & Mindy, Williams was already famous for his frenetic stand-up routines. His movie career took a little longer to get off the ground (*cough* Popeye *cough*), but soon enough he'd branched out from mere comedy roles to ones of greater emotional and dramatic heft.
Williams has been near to my heart for a very long time. My nascent comedy sensibilities were mostly informed by watching his and George Carlin's HBO comedy specials (1982's An Evening with Robin Williams is still spellbinding), and I probably saw every movie of his until the early 90s, and only stopped because I couldn't always afford rent, much less movies. He earned some ridicule, and rightly so, for some of his latter era choices (Jack, RV, Bicentennial Man, to name a few), but unlike other famous 70s comedians I could name, he never descended into utter schmaltz or remake hell, and generated some of the best notices of his career in movies like One Hour Photo and Insomnia.
On a more personal note, his stand-up specials and early movies were a common bond between myself and a childhood friend of mine who committed suicide almost four years ago. I've never suffered from depression, and I can't claim to understand why it drives so many to this end, but I fucking hate how it continues to take people away from us before their time. And yes, 63 years old counts.