Some sad news today from the world of entertainment and wonder: Don Herbert, better known as TV's Mr. Wizard, has passed away at the age of 89.

I have fond memories of watching his show on Nickelodeon, bearing witness to the wonders of the scientific world along with thousands of other kids my age. It's a shame that he's passed, but 89 is a good run and he accomplished a hell of a lot.

Is there an equivalent today? If there is I bet he's "extreme".