Brought to you by the same guys who started Skype and Kazaa, Joost lets you stream TV to your screen, and they've just started letting users send out Gmail-style invites. We just downloaded it, and we'll be watching old episodes of Stella for the rest of the day. (By the way, we've got 870 invites left, so email if you'd like one. Ahem.)
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.
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