According to this Wired piece, the promised ability to watch videos with your friends in Home isn't included in the current beta. Nor, according to Home boss Jack Buser, is it likely to be included in the near future: apparently the firm is "looking into it."
From the piece:
While PlayStation Home director Jack Buser said the company was "looking into" adding the feature, he also said that Sony's approach to "user-generated content" was likely to be more of a "Lego-block" structure, in which Sony gives users the parts and lets them create what they want from a predetermined set of tools.
In other words, while Sony isn't saying whether video sharing will ever happen, it doesn't exactly sound like a system that provides for letting users stream videos off their PS3's hard drives.
More through the link. Still no date on when you're going to be able to try out Home for yourself.