I've always fancied getting my hands on the rights to produce an RPG for an official licensed product. I'm not fussy about which so long as the subject is ripe for conversion, it's more the challenge of making a game that mimics the feel of the franchise to which it is attached. And there's also the mondo advertising such products often get of course, not to mention that the publishing rights often go hand in hand with reams of lovely official artwork!
Anywho, I thought I'd start this thread to ask:
What do people think about official franchised RPGs of recognised properties?
Which ones worked, which ones didn't, and why?
Which franchises are dying for the RPG treatment?