Aztec Media

Seagate's Digital Audio and Video Experience (DAVE) looks like an interesting mobile media player  on paper.  You can get see a video demo over at Gizmodo.

Core features: wirelessly share media via Bluetooth and Wi-Fi; storage up to 20-GBs; form factor of 3.5-by-4.7-by-0.5-inches; and an estimated cost of $150.