I guess the question that always comes up is that if Bush is so good at clouding men's minds, how come it didn't work on you?

For the record, only a few days after 9/11, about the same percentage of people thought Saddam had something to do with it*, long before Bush or anyone else had a chance to cloud their minds. The pollsters had a perfectly good explanation for this phenomenon, unrelated to any propaganda effort:

The main reason for the endurance of the apparently groundless belief, experts in public opinion say, is a deep and enduring distrust of Hussein that makes him a likely suspect in anything related to Middle East violence. "It's very easy to picture Saddam as a demon," said John Mueller, a political scientist at Ohio State University and an expert on public opinion and war. "You get a general fuzz going around: People know they don't like al Qaeda, they are horrified by September 11th, they know this guy is a bad guy, and it's not hard to put those things together."

As for Saddam's ties to al Qaeda in general, but not specifically to 9/11, there is more than a little evidence in favor of that, not all of it circumstantial. If you are talking evidence to terrorism in general, there's even more.

*Regarding the connection of Saddam and 9/11, more than half of the 70 percent who believe in the connection fall into the category of only "somewhat likely." of course, this doesn't make as good a story.