Must. Say. Something. Positive.
OK, one of my favoritist things back when I was using Windows was a neat little BBC news ticker that sat at the top of my screen and scrolled the latest headlines, just like the news zipper in Times Square. Even better, if I clicked on a headline in the ticker, it opened the relevant BBC page in my browser. Very cool, and I was always at least vaguely aware of breaking news.
Unfortunately, the BBC ticker, which is still available on the BBC website, does not run on Linux. Boo, hiss. There is a similar widget that is supposed to run under Gnome (the desktop environment I use), but it really doesn't work. (It works for a while, but the version of Python it needs is outdated, and the conflict with the newer version on my system eventually sends my processor into a tizzy.)
After a bit of searching, however, I discovered KNewsTicker (click on photo for larger view), which is designed to work in KDE, a different desktop environment, but which will run in Gnome if you install bits of KDE behind the scenes.
Best of all, KNewsTicker will display news from any RSS feed, so I can snag headlines from AP, Reuters, BBC, Google News, even Slashdot or Talking Points Memo. You can also set filters to kill headlines containing certain words; I've had one spiking any mention of Larry Craig for the past two weeks. That's the configuration panel open in the screenshot; the ticker itself is an infinitely resizable bar that can be placed anywhere on your screen. The colors are also endlessly customizable, as is the speed (and direction!) of the scrolling.
I love this thingy. There seem to be similar apps available in Windows, but (apart from the BBC ticker) the ones I've seen cost money and/or seem likely to harbor spyware.
If you use Ubuntu, you can find KNewsTicker in the Synaptic repositories. You should install all dependencies, as well as the KDE control center (just search under "KDE"), which will allow you to specify your default browser (under "File Associations").