Wife and I just watched Robin Williams' 1978 HBO special, Off the Wall:
*NSFW* https://youtu.be/B92gbxUySZE <--- Clip from.
She'd never seen any of his stand-up and decided it was time on a DVD set which has been unduly neglected. I suggested we start early as his later stuff was very different and wouldn't paint the full picture. From his absolutely gonzo performance to the visible coming down from the dopamine high as he walks back to the green room with a camera tail really made his suicide click for her. "Those manic phases look like they'd been decades of hell."
R.I.P. to one we'll never replace.