Building the ultimate A/V component?

ibbey writes "The recent articles on hacking Tivo have me thinking... What would it take to assemble a combination PVR, DVD, MP3, CD, Web browsing system? Assembling the basic components is simple enough: Reasonably fast PC, ATI All-in-Wonder video card, DVD player, big hard drive, etc., all connected to a nice TV. But what about things like a remote control? Who want's a DVD/PVR without a remote? A wireless keyboard would work, but would be less then ideal. How about Dolby Digital output? Anything special needed? What other features are needed/wanted in such a system?"