I'm on the verge of building my HTPC build, going to be using Silverstone's MLO2 sleek looking case with a 780G Motherboard and a rare AM2 3800 x2 35W processor! I recently came across this review which is pretty much what I had in mind for my build. Pretty nice, don't you think?
Oh, and the case is available from Scan here:
http://www.scan.co.uk/Product.aspx?WebProductId=611615