Usability 
Inspired by Ewan's coverage of Papa John's UK's location aware iPhone web app, I went looking for its US equivalent. I found mobile.papajohns.com which delivers a snazzy Touch version of the pizza chain's online order service and store locator to iPhone's only.
Sadly, unlike the UK version it doesn't pickup the phone's location, you have to enter an address or zip code manually. Non-iPhones, including even Android phones, get a plain version with no eye candy whatsoever but identical features and functionality. If you want to try the iPhone version on your lesser device the direct URL is mobile.papajohns.com/iphone.