I added an iPhone stylesheet to the site this weekend. I'm using the proper "meta viewport" tags to implement it, so it should work fine on any device supporting that tag. I tested it with Safari and Opera Mini on an iPhone 4. Safari looks great, but Opera Mini seems to want to make the page a little wider than the viewport. I have no idea why, but it might be related to one of the "widgets" I have on the page (Google Reader, Twitter, Delicious, LibraryThing).
Let me know if this blog looks fine or wonky on your device.