I'm going to start doing some research on how to “digitize” the various entertainment systems I have here in my home. Ideally, I'd like to:

• Be able to record television directly to hard-drive (PVR)
• Be able to instruct my computer to record a show over the Internet
• Play shows on my living-room TV, from the computer in another room
• Listen to music stored on the computer on my stereo system

There may be some more cool things I could do, but I'd be interested in reading about what other people are doing in this field.