If you're a media pro... here are a few iPhone/iPod Touch apps to check out. I've not played with all of these yet, but they've all been recommended to me (or I've used 'em).
- Movie Slate
- Storyboard Composer (formerly Hitchcock)
- Blue FiRe
- Moviola Pro Video Guide
- Final Cut Pro Field Guide
- DVD Bit Budget Assistant
- Helios Sun Position Calculator
- AJA DataCalc
- PhotoAssist