If you own an iPhone, you are probably aware that there a "apps" for just about everything you can imagine. Here are few that might interest you:
LogMeIn Ignition: Free. This app will allow you to access your desktop from your iPhone. The display is small, but can be useful for quick tasks. it will also work with the iPad.
Ilium eWallet: You can try it for free, but it will cost $9.99 to keep it. This neat little app stores all your passwords and credit card number. Use it with the iPhone, iPod, or iPad.
Dragon Dictate: With this free application you can compose email or text messages as well as update your Facebook status.
DocScanner: For 5.99 you can scan documents to PDF or image files just by using your iPhone to snap a photo. It has built-in OCR, which will then allow you to email the files.
Fastcase: This free app will allow you to search case law from anywhere. All you need is Internet access.