Bit-Tech published a review of J&W's MINIX 780G mini-ITX HTPC mobo
It's certainly not perfect - the BIOS is mostly there but it really needs some work, it still needs some airflow on its passive heatsinks, and the AMD drivers are temperamental but these are minor irritations or teething troubles only. Once it's up and running it works great - we ran at least half a dozen CPUs in it without issue and even overclocked the SO-DIMMs with very little fuss.J&W's MINIX 780G mini-ITX HTPC mobo
Basically, its currently the best ultra-SFF solution you can buy for a HD-capable home theatre; its on-board audio is very good, it has oodles of connectivity and its performance is at least as good as the competition so if you're after new HTPC and you're under size constraints, stick the J&W MINIX 780G high on your list because we'd recommend it.