Jim Parsons reflects on how fortunate it was to have worked with Stephen Hawking. The theoretical physicist appeared in seven episodes of “The Big Bang Theory.” Yet Parsons admitted that it was intimidating and overwhelming when he met him. Chuck Lorre said: "His willingness to be part of our world, to come and be part of our show, was an extraordinary acknowledgement” Hawking died on March 14, 2018 at the age of 76.