PlayStation 2 Broadband Adapter
Got mine (plus around 20 books) today from Amazon UK. No games yet, so I attained utter geekness level by surfing Slashdot with it. The UI is simple, and surfing with the joysticks soon becomes second nature. Plugging in an USB mouse works, of course, and an USB keyboard is supposed to work as well (but I'll be darned if I'll use a keyboard on a games console).
My DVD remote apparently didn't work at all with the browser, but the batteries may be dead and I'm too tired to bother right now.