Went to see this yesterday and really enjoyed it!
I agree that there was little character depth to most of the charcters other than Washington's character. I think his character had enough depth, as did Crow's character (altho I would have liked a little more explanation as to why turning in $1m is frowned upon, and what made him such a goody two shoes cop)
I was actually quite suprised when I got out the cinema and realised how long it had gone on for cos it didn't seem to drag at all.
And I am seriously considering growing a 70s style moustache! They were awsome!!!