Finally got around to watching this film, and it is great. Not totally in the mix for greatest film of all time great, but great, and especially so because of its ending, the final nail that settles the argument between great and near-great. Of course, I mean the ending to the Director's Cut, not the bowdlerized tv version.
That said, Gilliam's vision is great enough that even the slapdash job from studio suits is a good little film, even with several inexplicable moments. Of course, the film is not sci fi, not futuristic, although dystopian, and more a comedy than drama. It's not there with Dr. Strangelove, but it's miles better than the other films of Gilliam's I've seen, including his Monty Python stuff.
My guess is this was his one burst into the stratosphere, but I'd love to be wrong. A review is forthcoming, but here's some clips: