With Shaun the conversation always gets skewed b/c folks don't really know what we're calling him. I agree with a lot of the criticisms people have mentioned, especially the guy who said after getting tackled he just sits around and waits to be helped up (not a huge deal but annoying). I don't mind the falling down part, he only does that when there's no chance of him breaking the tackle, if he has enough space to give a guy a stiffarm or hit him, he won't fall down.
However...
If we all just take him for what he is, and that's about the 7th - 10th best RB in the NFL, I'm glad he's on my football team. I know that if you look at the list of rushing yards in the NFL (he's 9th) he is one of only 2 guys in the top 15 who are averaging under 4.0 a carry. But he's been too durable and too productive even when it doesn't feel like he's playing well to ignore. I'm glad he's on the Seahawks.