In the news today is Microsoft's release of its first application for the iPhone: Seadragon Mobile, an image-browsing app. And it has raised eyebrows because the same app hasn't been released for Microsoft's own Windows Mobile platform. In this Cnet report, a Microsoft exec explains that this is because the iPhone is the most widely distributed phone with a graphics accelerator. The application looks pretty impressive in this demo.
Here's a description: "Seadragon Mobile brings the same smooth image browsing you get on the PC to the mobile platform. Get super-close in on a map or photo, with just a few pinches or taps of your finger. Browse an entire collection of photos from a single screen. You can browse Deep Zoom Images that you can create from your own pictures or your Photosynth collection (or anybody else’s)."