Bart Starr wore number 15 as QB for the Green Bay Packers from 1956 to 1971 winning 5 NFL Championships in 7 years as well as the first 2 Super Bowls, although the name Super Bowl wasn't used until Super Bowl 3.
I'm sure there are others, but that's the name that popped up for me first. ---- Another is Hall of Fame running back Steve Van Buren of the Philadelphia Eagles. He played 8 seasons for the Eagles (1944-1951) and ended his career with 5,860 rushing yards, 69 rushing TDs (he scored 77 TDs total), a 26.7 kickoff return average and 3 TDs, 13.9 yard punt return average and 2 TDs, and 9 interceptions.
Fernando Torres
Mia Hamm
auguero does
Meow and meower
Dwight Yorke for Manchester United
The number 84 is not a particularly common shirt number. No player who is particularly famous has ever worn it.
Johnny Torres from Wake Forest University.
It is Gary Nevile and and Cafu of Brazil.
Patrick Viera, Cesc Fabregas, Vidic.
Tim Howard for Everton Tiote for Newcastle
Cristiano Ronaldo
Well there is Owen Hargreaves, Cesc Fabregas, and Sergio Ramos!