Lenovo Ideacentre Q150 Series 40814AU Desktop (Black)
Buy new: $349.99
Usually ships in 24 hours
I got this for a home theater PC to watch downloaded videos on my LCD TV. I had looked at the Mac Mini and other options, but chose to buy this. It has the same nVidia 9400M graphics as the Mac Mini and it's about the same size (maybe smaller). The only difference between the two (other than $350 in price) is that the Ideacentre uses a dual core Atom instead of a Core 2 Duo processor.
Lenovo Ideacentre Q150 Series 40814AU Desktop (Black)