If you've got two Tivo's in the same room, you can "assign" a unique code to two different stock Tivo remotes to control each Tivo independently. You use one remote for one Tivo and one for the other. I wonder if the Harmony can do this also? Of course with the Harmony you would really want it to be able to control both Tivo's with the same Harmony. Does anybody know if it can be done? I'm thinking about buying a Harmony but this would be a real stopper if it couldn't.

I am no expert on the Harmony, but I cannot see why not. On Tivo when you switch to a different codeset, the remote just sends a different signal, so it is in effect like using a different device and remote.