Clean up properties, use viewDidLoad over loadView.
Clipped blurring view using snapshotting instead of image view.
Fix rotation behavior with blurring view.
Use UIViewController layout methods
Correct order of appearance methods for will/DidAppear/Disappear.
Use somewhat faster -[UIImage drawInRect:].
Light status bar in example.
Initialize all views in viewDidLoad.
Use 7 spring animation always, why not.