I'm looking for a iPhone-like picker control that I'm able to use on the web.
Accessibility is not a concern. JavaScript will be available on all clients and the web app will be run on an environment provided to the user. If the solution could gracefully degrade to a select box though, that would be great. Flash & Silverlight are not ideal (for reasons I don't care to jump into) but similar solutions in Flash & Silverlight may be appreciated by others.
Here's an example of the control on an iPhone: