Re:Tyson (Score 1)

I'd also go with NdGT. He's smart, presents well, and I just don't see any smirk behind the smile. And he doesn't insist on putting "Doctor" in front of his name every time he is mentioned, unlike MK. The latter is certainly smart enough, and certainly passionate, but I get a whiff of arrogance from him, since he seems to start every episode of Explorations with a listing of his qualifications. Also, on Explorations, MK commits frequent sins of factual error, but that may be a natural result of the show structure - it sounds live and unscripted, so factual fubars should be expected. But my ultimate science hero is still Benton Quest :^).