Not that I've seen, and with the ports on the side the designs of the N800/N810 don't really lend themselves for use with a docking station.

I'd like to see Nokia take this into consideration with a next-gen device and provide a docking station capability that allows access to video/audio/keyboard/mouse/network in addition to charging. Basically allow the next-gen device to serve as a desktop replacement computing device while docked.