I recently purchased a Lenovo Ideacentre and installed it as a media center.  It is a very nicely designed PC, and small form.  It has a built in HDMI port on the back so I only have to run 3 cables, one to my TV, one to my switch and one for power.  The only complaint I have is that the receiver for the remote that comes with the machine is built in and is very sensitive as to what direction you are pointing the remote.  All-in-All it is a very streamline system that runs very well.  If I had to give it a 1-5 star rating I would give it 4 stars.