This is something I've strugeled with in the past: keeping multiple PC's in sync... anything from images to code to references... anything. I don't have an MCE, but this is something that could apply to just about anything.
If you're like me, you probably have multiple PCs with Photos, Music, Video etc. on them. For me, it's more of a backup strategy- if one HDD fails, I want to have all my media and storage is cheap. Sure, I could get a Mirra device or similar but a cheap ~$30 solution that works great for me is Smart Sync Pro, a software package that enables me to automatically sync my important documents, photos, music, home videos, and yes, even Recorded TV programs from MCE's around my home network automatically. It watches network folders for updates to metadata (such as # of times played in WM Player, a feature you can enable in Tools|Options) so when I use Auto Playlists on either of my PCs, I get the same listing of songs.