John Wisniski, Jr. is an American professional wrestler, better known as Greg "The Hammer" Valentine. He is the son of wrestler Johnny Valentine. In the course of his career, which has spanned over four decades, Valentine has held more than 40 championships, including the NWA United States Heavyweight Championship and the WWE Intercontinental Championship. An alumnus of WWE and World Championship Wrestling, he was inducted to the WWE Hall of Fame in 2004.
WrestleMania
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WrestleMania II
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WWE WrestleMania III
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WWE WrestleMania V
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Battle of the WWE Superstars
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WWE WrestleFest '91
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The British Bulldogs
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WWE Hottest Matches
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WWE SuperTape: Volume 2
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WWE SuperTape: Volume 5
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Demolition: Witness the Power
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WWE Mega Matches
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WWE Rampage '91
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The Ultimate Warrior
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Ricky "The Dragon" Steamboat
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WWE WrestleMania VII
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WWE Royal Rumble 1991
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WWE Survivor Series 1990
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WWE SummerSlam 1991
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WWE Survivor Series 1993
The Blue Knight
WWE Survivor Series 1988
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NWA Starrcade 1983
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Midnight Massacre
Caepio
WCW Beach Blast
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WCW World War 3 1997
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Bob Uecker's Wacky World of Sports
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Behind the Ropes: The Greatest Fraternity in the World
Himself
Fan Favorites
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At What Cost? Anatomy of Professional Wrestling
Himself
The Best of the WWF: volume 4
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The Best of the WWF: volume 7
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The Best of the WWF: volume 5
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The Best of the WWF: volume 9
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The Best of the WWF: volume 10
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The Best of the WWF: volume 11
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The Best of the WWF: volume 14
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The Best of the WWF: volume 16 Around the World
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The Best of the WWF: volume 20
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Most Unusual Matches
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WWF Hulkamania 1
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Timeline: The History of WWE – 1985 – As Told By Greg Valentine
Himself
WWE: The U.S. Championship: A Legacy of Greatness
Greg 'The Hammer' Valentine (archive footage)
WWE: The History Of The WWE Championship
WWE Hall of Fame 2004
Self
WWF/AJPW/NJPW Wrestling Summit
WWE: The History Of The Intercontinental Championship
Himself
WWE: Starrcade - The Essential Collection
Himself
NWA The Final Conflict
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350 Days
Self
Tag Team Champions
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WWE WrestleMania IV
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WCW Clash of The Champions XX: 20th Anniversary
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Heroes of Wrestling
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WWE Royal Rumble 1989
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WWE Survivor Series 1989
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WWE The Brawl to End it All
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NWA Boogie Jam
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WWE The Ultimate Challenge Special: The March to WrestleMania VI
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WWE The Big Event
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WWE Survivor Series 1987
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WWE Superstars & Stripes Forever: The March to WrestleMania VII
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WWE U.K. Rampage 1991
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WWE Royal Rumble 1992
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WWE Royal Rumble 1990
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WWE SummerSlam 1989
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WWE Royal Rumble 1994
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WCW WrestleWar 1992
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Chris Jericho's 30th Anniversary Celebration
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The Immortal Hulk Hogan
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WrestleMania 2 (Duplicated)
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WrestleMania III (Duplicated)
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WrestleMania IV (Duplicated)
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The WWF's Amazing Managers
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Macho Madness
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Brutus "The Barber" Beefcake
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Inside the Steel Cage
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Wrestling Superheroes
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Wrestling's Most Embarrassing Moments
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WWE Funniest Moments
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The Greatest Stars of the 80's
Self
WWE Grudge Match
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