Boing Boing has a nice piece showing the Tricaster Studio -- a setup aimed at live Internet broadcast at a comparatively low pricepoint. Described as "a TV truck in a backpack" the unit is basically a digital switcher combined with the ability to add titles and cue video packages -- which is perfect for doing your own interview show from your back porch.
(One ironic note, however, is that I'd never seen any episodes of Boing Boing TV before and didn't realize that they can't edit worth a damn. The episode, while informational, is just a series of jump cuts. Boo. They need to hire someone who knows how to shoot and cut interviews, or -- ironically enough -- maybe they should use the Tricaster and live switch the interview....)
In any case, go and check out:
BB Video review: Tricaster, and the Future of Live Video Online