The Active Desktop in Windows is a feature I'd love to see in OS X. On my ThinkPad I have a world map that displays the current times in cities across the world. It updates constantly so I see what time it is in London, Beijing, Moscow, Sydney, etc, very handy for financial work. I can also put stock charts on my desktop as desktop items and syncronize them so they're updated daily.
Could we see this in Mac OS X? Is it a feature anyone else would like? I've found little things like LaunchBar, while certainly not a necessity, have changed the way I work. I rely on little time savers like LaunchBar to make computing easier and more streamlined. Active Desktop would be another feature, while not providing anything I couldn't do another way, would save me time and effort.