I just installed an app to update my blog from the ipad. The boss supplied me and a workmate with 64GB 3G models for research and testing. I’m still playing with it and installing apps. I’ve written a few small apps for iPhone (SDK 3.1) but would like to do more with Objective C.
The best app I’ve come across is the one by the ABC (Australian Broadcasting Commission). I used to watch i-view a bit to catch up on the shows I miss during the week. There aren’t a lot of Australia-only apps.