Roku hooked us up with an early preview of Amazon Video on Demand in HD for its Video Player, and while we didn't have much time to poke around, but what we saw was mostly impressive. Video took a little longer to buffer in than Amazon SD or Netflix's HD streams on our 10Mbps cable connection, picture quality was noticeably better, although still not at Blu-ray levels. Apart from the HD content, the experience on the Roku box is essentially same as always: there's still no search in the