Chuck Bednarik is a Pro Football and College Football Hall of Famer who played for the Philadelphia Eagles.
Bednarik was well known for being one of the NFL's last "Sixty-Minute Men," meaning he played offense and defense, like Stanford fullback and linebacker Owen Marecic.
"Concrete Charlie" was a 10-time All-Pro and two-time NFL Champion. The Slovak, as he mentions in the video, won the 2011 Walter Camp Distinguished American for his service in the Air Force before going to Princeton where he was a finalist for the Heisman Trophy.
In case you were wondering, Bednarik is not fond of the Eagles, his team, due to disagreements when the team refused to buy copies of his book in 1996.