if you really want to understand why the NFL  (or probably a lot of businesses) need a rooney rule, and  how a guy like wade phillips gets a head coaching job...

http://www.sportsline.com/nfl/story/9998083

on the nfl page... this really puts into perspective just how inbred the NFL can be... and how much hiring goes on that has nothing to do with ability and everything to do with nepotism