So I was taking a shower this morning, where I do my best thinking, and the following occurred to me in this order:
1) You could probably use football and/or a car as an analogy for anything.
2) How awesome would it be to have a Self Help book that uses football as the vehicle? Self Help for Football Fans! It could be an entire series. Self Help for Linux Administrators, etc.
3) Wow, this water is hot.