Hoping, perhaps, to compete with the iPhone's cool "pinching" interface, Microsoft has taken the wraps off of its own solution for handheld web browsing, called (oddly enough) Deepfish. Microsoft's goal was to allow Windows Mobile users to browse full web pages instead of scaled down versions--without sacrificing speed or requiring endless scrolling.
Deepfish displays a full webpage on your Windows Mobile device and allows you to zoom in on various parts of the page using your joystick. The software accomplishes this by creating a static image of the web page that it uses as a map; the downside of this is that no dynamic content is supported. Deepfish is available from Microsoft Live Labs for a limited time, so if you're aching for a new mobile browsing interface, head on over.