Desktop Twitter Widget/Client?

[hsapiens]

I'm looking for a Windows widget that will give me a pop-up alert for new Twitter posts. Bonus points if I can configure it to behave differently for different lists.

Suggestions? Recommendations? What do you use?

ETA: Yes, I realize most of you get alerts on your phones. I'm a Luddite.

Comments

[greeneyes-rpi.livejournal.com]

I use Twitter Explorer in my Windows Sidebar. Sidebar is available in Vista and Win7, and there are many other widgets that make it fun (as long as you don't go nuts and slow down your machine). I keep a real-time traffic display, a weather image, and a CPU monitor up as well.

[hsapiens.livejournal.com]

That sound very interesting. I'll go and check it out. Thank you. :)