A spin on the traditional-This one with lights.
Using a bike tire rim...
Using a ladder-if you can find one that's been roughed up and used a bit, even better!
My new favorite-using copper pipes meant for plumbing. Check out: http://www.thisoldhouse.com/toh/how-to/intro/0,,20286884,00.html for instructions on how to make your own
Or if you can think outside the box, take other items like this old toboggon and use it as a pot rack. String it up and attach S hooks and you're on your way!
We're basically in a time where there are no rules and creativity is encouraged. What can you think of for your pot rack?