We were in need of replacement hardware for our two Shuttle K45 we’re using as servers, since one of them developed a case of capacitor plague, and the Asus Pundit4 P5G41 turns out to be a nice choice. It’s compact, features a LGA 775 socket, two DDR2 sockets, space for one 3.5″ and one 5.25″ drive (SATA only), and even has a serial port built right into the case (we’re big fans of serial consoles).
This model seems to be relatively new (introduced apparently in the fall of ’09), and I couldn’t find any pics of the innards. I’ve added a couple of interior photos to our wiki. Enjoy!