http://www.nytimes.com/2014/03/23/sunday-review/the-pilots-in-the-basement.html?_r=1 (http://www.nytimes.com/2014/03/23/sunday-review/the-pilots-in-the-basement.html?_r=1)
My brother spends hours on this. He almost did his PPL, so I guess he misses that very much !