Yes, when my XP server reboots due to an "important update" (that Microsoft pushes onto me) reboots the computer without my permission, I can use RealVNC to log back in.

Another cool thing you can do once you get an SSH server onto your Windows computer: you can use sshfs on your tablet to map Windows file folders onto your tablet. So anywhere you can get WiFi (or, if you tether to a phone, anywhere you can get service) you can access your files as though they were on the tablet...