iPhone SDK now available

I totally forgot that today Apple had an iPhone event scheduled for today. I'm currently watching the session while I write this. I just signed up for the iPhone SDK and cannot wait to get back into Objective-C. I used to be a NeXT (predecessor to Mac OS X) developer so seeing some of the familiar API's and language will be great. The best part is the Exchange integration that will be coming in June, finally I will be able to get my work email on my iPhone (wait, is that something I really want?). So are you going to build your own iPhone apps? As I start to develop some apps, I'll post my experiences here asap.