As long as Doc Hammer plays Dr. Girlfriend!

There was a time when Guillermo del Toro was talking about doing this. Sadly, he apparently gave up on it a while ago.

Tobin's Spirit Guide does actually exist, after a fashion:

"what did the negotiators pull out of their hat to get all five permanent members of the Security Council to agree to having an independent, nuclear-armed paramilitary force wandering around?"