I saw the movie this weekend and was sorely disappointed. I didn't like Spiderman 2 that much, and this 3rd one was just too disappointing. Halfway through the movie I was rather bored already. Sigh. I don't think it's worth it to see in the movie theater, I'd wait until it was out on TV or Rogers on Demand.
But this is all just my pessimistic view on this! :P