Do you use WordPress? Do you have an iPhone? Or do you just like beta testing cool apps? You could help beta-test the upcoming WordPress for iPhone 1.2 release.
The catch is, you can’t test unreleased apps on an actual iPhone. Instead, you have to download the (free) SDK, and run the code in the iPhone simulator. A lot of work to go through, to be sure, but if you’ve got time on your hands, and like playing with the latest toys, there ya go.