During our visit to Mount Vernon (George Washington's home in Virginia) I was confronted by the fact that I didn't know all that much about one of the greatest American heroes. This book fills that gap quite nicely. It concentrates on George Washington himself - his character, his background and his motivation to do what he did - without digressing too much.
Ellis has done all his research himself and bases the bulk of his book on George Washington's papers.
A very nice introduction, all in all.