I think that's probably the best you'll find. I'm just having a little look now to see what people say about playing HD video / Ubuntu support.
Note there's only DVI / VGA / S-Video output - no HDMI. I'm guessing you're using VGA at the moment, so the TV must have that? One thing's for sure - it'll never play Blue Ray.
CPU should be good enough provided you can get a player with hardware acceleration on that card. I'm using an Atom for the job which is less powerful.
*edit*
From the nvidea website:
"DVD and HDTV-ready MPEG-2 decoding up to 1920×1080i resolutions - Linux compatible - Complete Linux Xfree86 drivers"
So no promises from me, but it sounds good!
http://www.nvidia.com/page/pg_20040109440047.htm
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