FWIW- Popular science just had an overview of HTPCs with some reviews. Nothing really in depth, but a nice multipage overview of them just the same.

I just did a quick search of their website:
Build your own HTPC overview
and more detail

Finally, the article I was talking about above: The PopSci Buyer's Guide: Media Center PCs. On that page, make sure you follow the links on the left side to "related articles"....that's where they review specific desktops, laptops and "living room friendly" PCs...



::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::