I agree Jefferson. I was actually part of the infamous Paramus New Jersey test screening that was to decide whether Terry Gilliam would recieve final cut. He didn't of course. I remember the crowd loving it and cheering at the end, although there were more than a few walkouts.
After the film was over, I saw Terry Gilliam hugging his producers in the lobby celebrating how well the screening went. Unfortunately that was before they read the score cards and scored less than they had hoped.
For those of you with the Criterion Laser Disc, this is all documented in the supplements.
A classic indeed!