Ya know, I'll be honest with you, this shuttle isn't thin but its the nicest HTPC I've ever seen. I'm sure there are those crazy ones with the built in screens and whatnot but this thing is just clean.

A little pricey. I wish they offered the bare bones case but they don't at the moment.

As far as thin goes, when I was at the Dell kiosk, I saw this really compact desktop they had there. It was pretty short and looked to be something like 4-5" wide. Just sort of struck me as being really small.