What is a good way to manage user accounts for a Windows 7 Media Center PC that is part of an entertainment center for a family? Each family member keeps most of their personal stuff on their own computer.

I was thinking the simple approach would be to create an admin account for management and then just create a "Family" user account w/o a password that is the default account used by the media center. This account would be used for the PVR, playing blu rays, music, etc. I don't think it is practical for someone to have to log in every time they use the media center.