Wondering about grain...

[Vinyard]

Hello!

So I rented the movie "Hero" a few weeks ago. I sat down to watch the movie and I noticed A LOT of film grain. I mean... I know if a movie is shot on film (which like 99% of movies are shot in) there will be grain, some more than others. I've seen Scarface on blu-ray and the picture is sharp and nice and the colors are great! Even though Scarface had quite a lot of grain it wasn't ANYWHERE NEAR the movie Hero. First I thought there was something wrong with the disc and I tried adjusting the settings on my TV and blu-ray player. I mean... Hero was SUCH a grainy film! It was like my TV screen was full of ants, seriously. The picture wasn't even sharp!

So I turned off the movie after a few minutes because it was unwatchable and decided to look at the blu-ray review here on blu-ray.com. So I take a look at the screenshots in the review and to my amazement, I can't see any grain at all in those pictures. So I chose one picture and clicked on it to get fullscreen and then I paused the blu-ray movie on the exact same spot as the screenshot on my computer. So I compare the picture quality and the screenshot on blu-ray.com is nice and clear and the screen on my TV is grainy all over! How is it possible that the movie Hero can look so great on the screenshots?
I can't even describe how grainy Hero was. It's like nothing you've seen. It literally looked like my TV screen had a thin layer of sand covering the entire screen. I'm not joking, it seriously looked like that. The grain in Scarface was not a problem for me because I enjoyed the overall picture and sound quality but Hero had grain covering the entire screen during the entire movie and when I look at the pictures on this website I can barely see any grain at all.

How is this possible? Did the person who uploaded those screenshots and wrote the review have any special settings on the TV/BR-player? I was also watching American History X on blu-ray and that movie also had a lot of grain but mostly in the background and on walls etc etc. But I compared American History X on my TV screen with the screens on the review here. And I notice that there's a lot of grain in the background on my TV and when I look at the pictures in the review the wall is completely fine without grain.
Seriously folks, help me out! I'm going crazy over this. Maybe these people who write the reviews have a $10.000 blu-ray player or something, lol :P