Phil Loadholt of the Minnesota Vikings was one of the NFL players who has worn number 71. George Conner who was with the Chicago Bears was another player who wore number 71.
Deon Sanders wore 21
Troy Polamalu & Jim Norton
Brett Favre is all that I know of.
Chester Taylor of the Minnesota Vikings
Michael Vick, John Elway
Mike Webster-Center for the Pittsburgh Steelers
possibly takeo spikes...? not sure though