Canon- Hitchiker's Guide to the Galaxy and Doctor Who take place in the same universe. (Yes, is canon as of Christmas Invasion, amirite?) Canon- Ten thinks Arthur Dent is a nice man Canon- Arthur Dent travles around the galaxy with Ford Prefect Fanon-- THIS
(No spoilers, but probable fail, and might not be funny)
I've been wanting to do this since I first watched City of Death (like... last year... eh heh heh) but it took me a while to get around to it. Crossover with Return of the Pink Panther.