DerbyDad03 wrote:

I was watching Ice Road Truckers last night, which is sponsored by
Craftsman, so they kept running this commercial for one of their
cordless tool lines.

They show one clip where the guy is drilling into a piece of wood
attached to a tree - steps to a tree house maybe - with a wood boring
bit. Maybe it was an optical illusion, but I'd swear the drill is
running backwards - counter clockwise. I rewound my DVR a bunch of
times, and ran it it slow motion. It sure looked to me like the bottom
of the bit was coming up and the 3/8" marking was going away from, not
coming towards the viewer.

Has anybody else seen this?

Yep- On "Wagon Train" in the 50's. Might be why they call it the
'Wagon wheel' effect.

In a nutshell it has to do with permanence of vision, frames of film,
and optical tricks our mind plays on us.

A more lengthy explanation is here;
http://www.crystalinks.com/wagonwheeleffect.html

Jim