Stacey Spears at AVS Forum confirmed the Samsung can output 1080p via HDMI, just that some devices don't play nice with it--- some sort of HDMI handshaking problem probably. However, we don't know yet if the de-interlacer used after the Broadcomm chip can do motion-adaptive and inverse...
Don't use The Fifth Element for what Blu-Ray can do with PQ as it is a poor transfer at best. Some of the other Blu-Ray titles are being reviewed as much, much better. Sony should not be the studio to look for to give reference discs. Look to Fox or some of the other studios who do great DVD...