.... and you know what? It didn't suck. It didn't suck at all!
But you had to be a fan of the original cartoons in order to get all the subtleties found in the movie: all Scooby & Shaggy being stoners innuendoes, Scrappy's appearance, the insights behind Fred, Daphne & Thelma's characters.... It was all there in complete parody form that made me laugh while remembering the repititious campy-ness of the original cartoons.
Now I had heard a lot of crappy comments about this movie, and I'm sure some will follow in this thread. That being said, I'm almost positive that the origins of these comments will come from the mouths of those 25 years old and younger who weren't first generation Scooby-Doo watchers. If you didn't watch the originals, I can see how you would think the movie sucked... because you just didn't get it.
In hindsight, while I'm remembering more and more about the movie, the more I think it was brilliantly written. The only mistake the writers made was that they wrote it for the 70's generation who watched the originals, but only to be scrutinized by the 90's generation who think everything is crap.
Just my two cents...
Cheers...