RIP Robin Williams - watch the entire first episode of Mork and Mindy

We say goodbye to a comedic genius, who suffered from bipolar disorder and serious, relapsing alcohol and drug addictions. He left us a legacy of laughter, and our thoughts and prayers are with his family and loved ones.

We share these memories of first getting to know Robin Williams as Mork, the beloved alien, who initially appeared on "Happy Days" with the Fonz.

The entire first episode: