Well that just hits hard. John Glenn is responsible for my primary interest in spaceflight. I had had a passing interest before his STS-95 flight, but when my 3rd grade class watched that launch live, that ignited a lifelong interest. I still remember the words said by commentator Lisa Malone: "Booster ignition and liftoff of Discovery with a crew of 6 astronaut heroes and one American legend." (yes, I remember that line exactly, from when I was 8 and I'm 26 now, that's the impact it had.)