Desktop Sidebar

One of the first apps I reinstalled on my PC today was Desktop Sidebar, which is proving to be quite indispensable. The RSS newsfeed panel alone is sheer genius - scrolling headlines from sources of my choosing in my face all day long is my idea of heaven. But add to this integration with Outlook, Messenger, Windows Media Player, and more, and you have one of the most genuinely useful apps I've encountered in a long time.