For those interested in getting acquainted with Silverlight 2 development, there an application online for you to try out. It's a Silverlight 2 online banking application for a fictional company named Woodgrove Financial. Now don't go try to get money out of the account. But you can try out the pop-out menus. and user interaction that may be coming.
Source, installation, and a walkthrough script are available online at Microsoft's Financial Developers site in a single .zip file. The site also includes links to events and code specifically for developers in financial services.
That said, the demo may give you a ideas on how to bring your application to Web 2.0 with Silverlight.