When I think about it, there is one more thing I LOVE about the Nolan Batman movies. That is the character of Scarecrow. Not, because he was done in some new and ambicious way....
No. It's because in the first movie, he gets arrested and send to Arkham. The 2nd movie begins, and he's selling drugs for the cops. He's literally doing his own same shit, and he's free. So, Batman "arrests him".
And in 3rd movie? He's again out and doing his usual shananigans.
He is the only character in Batman movies, who is visiting Arkham for weekends :D