What is the best way to Organize MP3s, Photos and Videos?

I use MediaMonkey to manage my files, and I am very happy with it.

As far as videos, I take advantage of the folder views and thumbnails to make my folders nice to look at:

A cool trick I only recently learned is that you can just name the image you want to show in the folder "folder.jpg" and it will be automatically used as the thumbnail. This is particularly handy.