It is a proud but lonely fraternity made up of players who fight for a living. They police games, protect the skill players on their teams, and according to many enforcers, pay a price both physically and emotionally.

SEVERYN: My Life as an Enforcer

GALLERY: Athletes and Depression

KRAMER: Treating troubled athletes

Some enforcers become so feared that they make lasting names for themselves.

GALLERY: NHL's most notorious enforcers

Here's are 20 videos featuring some of the league's most famous fighters in action through the years.

RICK RYPIEN vs. BRAD MAY (11/12/09)

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GEORGE PARROS vs. COLTON ORR (1/20/11)

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WADE BELAK vs. DEREK BOOGAARD (12/02/09)

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RILEY COTE vs. SHAWN THORNTON (3/15/08)

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DONALD BRASHEAR vs. GEORGES LARAQUE (12/27/07)

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RYAN VANDENBUSSCHE vs. KYLE FREADRICH (3/3/00)

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DENNIS VIAL vs. ROB RAY (4/10/96)

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KELLY CHASE vs. TONY TWIST (3/9/96)

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TIE DOMI vs. STU GRIMSON (2/22/96)

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CHRIS SIMON vs. BRENT SEVERYN (3/11/95)

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MARTY McSORLEY vs. BOB PROBERT (2/4/94)

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LINK GAETZ vs. JOEY KOCUR (1/9/90)

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DAVE MANSON vs. BASIL McRAE (3/1/89)

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CHRIS NILAN vs. DAVE BROWN (10/26/88)

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DAVE SEMENKO vs. TIM HUNTER (4/17/83)

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TERRY O'REILLY vs. CLARK GILLIES (4/19/80)

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BEHN WILSON vs. STAN JONATHAN (3/23/80)

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TIGER WILLIAMS vs. DAVE SCHULTZ (4/22/76)

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WAYNE CASHMAN vs. KEITH MAGNUSON (1/15/72)

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ERIC NESTERENKO vs. JOHN FERGUSON (4/27/65)

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