While reviewing for the aPHR, a question about 360 degree feedback threw me. I pretty much skimmed over that in the study guide, so I had no idea what it was. Now I do. Here are the videos I watched to review.

360 Degree Feedback by InfoTechRG - Just a brief overview.

What is 360 Degree Feedback? by Pario360News - Basically reading off a powerpoint, but made especially for managers.