It looks like you will soon be able to acquire a 25-watt AMD Athlon64 3100+ in the AM2 package, per this article on Linuxdevices.com. This is great news for embedded applications, as the Geode was a poor performer even by old standards.
I think these CPUs will find huge value in custom DVR boxes. Sure, MPEG-4 acceleration is fine when you just want to record or watch TV, but what if you want to compress those recordings? A custom DVR with a 3100+ could run compression jobs when the tuner’s not active, giving you even more space on your DVR’s drive. Assuming a performance profile on par with the Athlon 64 3000+, it should be more than enough for XviD encoding. You won’t get any stellar x264 encode performance, but such is life for anyone who doesn’t have an overclocked 4-way box as their media center.
Now we just need a mini-ITX AM2 board that supports 4GB of RAM and firewire, and we’ll be set!