I actually forgot Walsh, he would be right there in the top 5 with em. I think Madden was a damn fine coach, like you guys said, highest winning percentage of all time but he didn't do it for long enough. If he had hung around for another 10 years or so, then yeah. But in no particular order, the top 10 coaches would have to be ....

Vince Lombardi
Don Shula
Bill Parcells
Tom Landry
Bill Walsh
John Madden
Chuck Noll
George Halas
Joe Gibbs
Hank Stram/Marv Levy