Lighting Diagrams
We know that the Iphone and IPad have an app for everything, but they have some nice app for the photography enthusiast. I use the Sylight Iphone app to make all of my lighting diagram and keep record of all my set up for future reference.
Sylight is really easy to use and have everything you have in the studio and on location, is the best app out there and get even better because its free!!
http://www.sylights.com/iphone