There have been many noticeable jersey numbers given out in the history of the Penguins franchise. Only two numbers in the Penguins franchise have been retired, #21 of Michel Briere, whose life was unfortunately cut short at the young age of 21 when he was involved in a car accident in 1970. Nobody has ever worn the #21 for the Penguins since, and his jersey was officially retired in January of 2001. The other number retired is of course the #66 of former great Penguins player, and current team owner, Mario Lemieux.