I’m sure this has been brought up many times before, but I can’t for the life of me figure out why the iPhone webapps directory (which is bookmarked by default on all iPhones) isn’t an iPhone optimized page. Not only is it non-optimized, it’s more difficult to navigate than most. Apple is (or was) encouraging developers to iPhone optimize apps, so it just seems obvious that they would do the same for their own.
On that topic, the iPhone 2.0 API and the new App Store have kind of overshadowed the web app directory. As a new iPhone owner, I just checked it out for the first time. It contains some good stuff; you may want to check it out if you haven’t already. Just remember to do it on your desktop.