It won't stream HD, but Sony's newest LocationFree TV (and Slingbox competitor) will take HD video sources by component cables, down sample them to QVGA, and spit em across your network or the internet to laptops running the Location Free TV clientware. (I believe Sling does higher res on a LAN, and their Pro unit already does HD by component.) Oh, this one gets VAIO branding, too. The question is, who will be the first to do HDMI?
Location Free has been one of the most underrated products by Sony.
Pros- Easy setup, device design isn't as ugly as slingbox, and when the GF is watching a movie, I can tune into ESPN via my PSP or laptop, pretty sweet.
Cons- Not cheap, additional licenses not cheap, doesn't work with Windows mobile.