Konfabulator Yahoo! widgets. Found this while searching for “flickr widget”. (hey thanks for mentioning about the widget pal)
Get it here: http://widgets.yahoo.com/
Desktop without the Widget (its a slow win box with 2.8GZ CPU and 1GB RAM. Sad. But Can’t help it)
voilà ! here is the desktop with the widgets, Two of them fetching photos from flickr, third one replacing the post-it notes.