The AG-HPG20 is a portable deck which takes HD-SDI input and lays it down to P2 cards in either DVCProHD or AVCIntra formats. Unless you’re Convergent Design, this is in the category of Hella Cool. They don’t explicitly say whether it’ll run on batteries, but hopefully if they call it “portable,” it will.
AVCIntra is my Compressed HD Format Of Choice, if all else was equal (vendor support, etc). My dream would be a device like this that went to SXS instead of P2, but we can’t have everything all at once. 4:2:2, full raster i-frame only compression at 100mbit? Hotness.