Wow Bill Nye is on top! I didn't think that would be the case but so far the votes are:
Bill Nye the Science Guy - 15
MythBusters - 12
Beakman's World - 2
I suppose there are a few more Bill Nye fans out there than I thought. Although most schools I believe showed some of his episodes for science class. I remember watching a few in Middle School / Junior High School.