Shirish said "Bill Belichick is considered one of the greatest coaches (may be of all times) for his contribution to make what Pats are today. " >>> Shirish bro, here are some of the coaches that I think of great NFL coach. May be you want to search each name before you crown Bill B as the greatest. Vince Lombardi Tom Landry Bill Walsh Mary Levy Don Shula I rate coaches like Jimmy Johnson and Bill Parcell ahead of Bill B. He is not even a fall of fame coach (as of today) forget about him being the greatest of all time.