title: #import iAd in .m instead of .h
body: <p>Is there any way to <code>#import</code>  in the .m file instead of the .h file? The problem is that I need to specify that the view controller is a <code>ADBannerViewDelegate</code> in the .h file, which it doesn't recognize if <code>iAd</code> is imported in the .m file.
  Is there some way around this, or am I stuck having to <code>#import</code> <code>iAd</code> every time I <code>#import</code> that view controller?</p>