Mike asked for a Spiderman 3 review, so here goes...
Basically a B/B+ movie if you're a fan of the genre &/or franchise. Not a lot to be said about the plot in the interest of preserving spoilers. It's like a ten course banquet, you can't get too full on any single offering because you know you have to save room for the remainder. Comes in at 2:20, but with 3 villains and 2 love interests to deal with Spidey & the audience are kept quite busy. Great action sequences (really!), most of the non-action scenes aren't too heavy (albeit rather predictable), a couple of cheesy character development sequences, one of which is pure schmaltz. Maguire is good; Dunst is better; Topher Grace, Thoms Haden Church and James Franco steal a couple of scenes each. Bryce Dallas Howard is ill-used, but gorgeous. If you enjoyed the first two it'll definitely be worth a ticket to see this on the big screen.