Just upgraded to Tiger yesterday and have been playing around with different widgets. While it's cool that they are always on, just floating in the background, they don't really add anything more then the small apps and bookmarks I have been using. But they do seem like they would be perfect for a wifi ipod (or tablet). The little bits of info you need quickly, updated and available on the go, managed from your mac. Next iPod will have wifi, bluetooth and widgets.