Top 5 iPhone App's

1. OneTrip Shopping List - Has a simple and ingenious interface for quickly oganizing and building a shopping list.

2. iPhoneChat - Lets you log into AIM, view your contacts, and handle tabbed chats.

3. Google Reader - Read feeds, has a great interface, after you install it you just have to change the url after entering google reader, so it displays the normal reader rather than googles iPhone view, hen apply the javascript link.

4. iZoho - Zoho Writer, Zoho Sheet, and Zoho Show. The iPhone can display PDFs, Word docs, and Excel spreadsheets, but with Zoho's tools you can edit some of them.

5. Gas.app - Find the nearest and cheapest gas station by giving the iPhone Gas.app your zip code. You can then click the station to get a Google Map view.

iPhone - Office

It's said that Microsoft, now with the iPhone SDK is considering a version of Office
for iPhone, but they are not the only one, DataViz is working to their Documents To Go solution
to the iPhone.