In the quest to put together a list of tools needed for a project team toolkit, I came across BoardLess, a rather nifty bulletin board application
written in ASP. Only runs on machines running Windows 98/Me/NT/2000 with IIS4 or IIS5, but I'm sure someone will port it to PHP/MySQL one of these days...
The talented IAs over at 37signals
put together a usable mockup of an online banking "My Account" page