The X1's user interface is based on panels, which look like miniaturized screens. But they aren't miniaturized screens; some are bonafide XML or native applications, and some are mashups of Web content and stuff on the device. This "magic fish" panel is one of the most interesting. The fish each represent part of the status of the device. The black fish is showing that the battery is low; if there was more battery, he'd be gold. The gray fish is the sound fish - since the phone is muted, he's gray rather than gold. Neat, huh? It's like the Ambient Orb, but as a Windows Mobile screen saver. It's also quite soothing.