I did literally just this last week, with an ITX motherboard, a 65W APU (Trinity), and a case to match. I'm quite pleased with the results, and with Big Picture mode (given it *was still Beta)
Is this something I should be submitting to HN directly?
Also, let me know if there's any particular pieces of information you want expanded/shared. I haven't yet had an opportunity for photos or video of use this evening.
I'd be interested in hearing about that too. I just ordered parts to build my parents a computer, I'm using it as an excuse to try out a Trinity APU. If I like it I'll look into building an ITX size for myself.