Who Was Important to You Who Died This Year?

We need to make sure we don't forget Frank Drake, of course, the astrophysicist and astrobiologist. There is somebody who I think deserves mentions: Daniel Murphy. And although he was a listener of the Skeptics Guide to the Universe, among other science podcasts,. He was a very, very significant fan of the show and a contributor. So those are the ones that stuck out for me. Anybody else want to mention anyone that was important to you who died this year?