Spiderman 3 Quality?

[STI Jaguar]

So I bought a 46" Sharp Aquos 1080p along with a PS3 and a free OpenSeason/Spiderman3 yesterday.

The Open season movie looked really good on the TV, I noticed no banding of anykind. But the Spiderman3 is sharp but has horrible noise quality. I am sitting 10 feet back and can see alot of noise, especially when the scene is dark. This can't be right.

So I am figuring several things. Am I expecting too much from Blu ray quality? Did I get a bad Spiderman3 copy? Or is all Blu Ray movies this noisy. I know some of you guys have listed Spiderman3 as amongst the best Blu Ray qulaity so I will be very worried if this is the best Blu Ray quality.

Open season looked fanatastic but it is an animation so I cannot really tell, I will try and pick up another live action movie today and see what the deal is. I am sure that my tv and PS3 are both running at 1080p with an HDMI cable.

Should I pick up a better quality cable? My cable initially comes from the XBOX 360elite.