Since the introduction of the Video Decode and Presentation API for Unix, the community has come up with VDPAU support for MythTV and most recently the Xine media player picked up VDPAU support. This afternoon we now have word that the VLC media player will be picking up VDPAU support.
The VLC project currently has two developers working on implementing this video API that currently is only used by NVIDIA's binary driver. The confirmation of this work can be found in the VideoLAN Forums. Implementing VDPAU will allow for HD video playback on Linux even with very low-end hardware.