Along with the latest round of Apple Tablet rumors, Aryk pointed me to the Lighthouse SQ7 which is a 7" tablet used to post to your social networks via voice recognition and transcribing, and will ship early October for $249. Gizmodo has more details. It runs on Ubuntu so it will be infinitely hackable.
The idea is very cool, but I'd like an onscreen iPhone-like keyboard and a touch screen (stylus? how 2001!). The price is a bit high also. I think at $99 I'd snap one up in a second, as this is perfect for my sitting-in-front-of-the-TV-surfing needs