One of my favorite scientists. He made science easy to understand, and would inject humor where possible. In a recent lecture, he showed a photo-shopped picture of himself, from his zero G experience, being sucked into a black hole! So, definitely up for a joke. Hope he would have liked this one.
Loved his appearances on Star Trek: TNG, The Simpsons, and other shows.
RIP Stephen Hawking 1942-2018.