i'm thinking about loading my ipod with some of my favorite images which may be some of my own plus some from others. not necessarily to exactly duplicate them, but to jog my memory as to why i like them so i can produce something silimar (nice angle, nice lighting, composition, use of stairs, use of fountain, etc.). in my bag i also have a table with recommended shutter speeds for stopping different types of action. i think i've got that one memorized but it's still in my bag. i also have my list of "must have" wedding shots just to make sure i don't forget. i also keep my camera and flash instruction manuals in my bag as a reference just in case i need it. even the best quarterbacks in the nfl wear a cheat sheet of plays written under their wristband! i'm wondering what reference materials or cheat sheets do others carry with them?