Need recommendation for video capturing software.

I’m on a Mac pro book and I teach students intro to Photoshop. I would like to be able to make tutorials for them to look over when they have questions out of class.

Can anyone recommend one?

I’m afraid the one I use and love is Windows only.

Could you recommend it just the same? I work on windows at school.
In my class I have a wide variety of students. Some know basic photoshop well but a good percentage have never used a computer… At all.

I am hoping to record the lesson to avoid repeating and repeating and repeating myself! I can always record the lesson at school if there is not a good Mac version.

http://www.ambrosiasw.com/utilities/snapzprox/

Thank you!

Fraps