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John Wisniski Jr.
Acting · Born 1951-09-20 · Seattle, Washington, USA
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.
As cast
Midnight Massacre 2025
Cast
Chris Jericho's 30th Anniversary Celebration 2020
Cast
350 Days 2019
Cast
WWE: The U.S. Championship: A Legacy of Greatness 2016
Cast
Behind the Ropes: The Greatest Fraternity in the World 2015
Cast
At What Cost? Anatomy of Professional Wrestling 2015
Cast
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WWE: 150 Best Pay-Per-View Matches, Vol 1 2014
Cast
WWE: Starrcade - The Essential Collection 2012
Cast
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JCW Legends and Icons 2011
Cast
Timeline: The History of WWE – 1985 – As Told By Greg Valentine 2011
Cast
WWE: The History Of The Intercontinental Championship 2008
Cast
WWE: The History Of The WWE Championship 2006
Cast
The Greatest Stars of the 80's 2005
Cast
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World Wrestling Legends: 6:05 - The Reunion 2005
Cast
WWE Hall of Fame 2004 2004
Cast
Heroes of Wrestling 1999
Cast
WCW World War 3 1997 1997
Cast
WWE Royal Rumble 1994 1994
Cast
WWE Survivor Series 1993 1993
Cast
The Immortal Hulk Hogan 1992
Cast
WCW Clash of The Champions XX: 20th Anniversary 1992
Cast
WCW Beach Blast 1992
Cast
WCW WrestleWar 1992 1992
Cast
WWE SuperTape: Volume 5 1992
Cast
WWE Royal Rumble 1992 1992
Cast
WWE Rampage '91 1991
Cast
WWE SummerSlam 1991 1991
Cast
WWE WrestleFest '91 1991
Cast
WWE U.K. Rampage 1991 1991
Cast
WWE Mega Matches 1991
Cast
WWE WrestleMania VII 1991
Cast
WWE Superstars & Stripes Forever: The March to WrestleMania VII 1991
Cast
WWE Funniest Moments 1991
Cast
WWE Royal Rumble 1991 1991
Cast
WWE Survivor Series 1990 1990
Cast
WWE Hottest Matches 1990
Cast
Battle of the WWE Superstars 1990
Cast
WWE SuperTape: Volume 2 1990
Cast
WWF/AJPW/NJPW Wrestling Summit 1990
Cast
WWE The Ultimate Challenge Special: The March to WrestleMania VI 1990
Cast
Wrestling Superheroes 1990
Cast
WWE Royal Rumble 1990 1990
Cast
WWE Survivor Series 1989 1989
Cast
WWE SummerSlam 1989 1989
Cast
Demolition: Witness the Power 1989
Cast
Fan Favorites 1989
Cast
The Best of the WWF: volume 20 1989
Cast
The Ultimate Warrior 1989
Cast
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WWE Wrestling at The Meadowlands: May '89 1989
Cast
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WWE Maple Leaf Wrestling: April '89 1989
Cast
WWE WrestleMania V 1989
Cast
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WWE Los Angeles Wrestling: January '89 1989
Cast
WWE Royal Rumble 1989 1989
Cast
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WWE Los Angeles Wrestling: December '88 1988
Cast
WWE Survivor Series 1988 1988
Cast
Macho Madness 1988
Cast
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WWE U.K. Rampage 1988 1988
Cast
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WWE Wrestling at The Meadowlands: September '88 1988
Cast
The Best of the WWF: volume 16 Around the World 1988
Cast
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WWE Maple Leaf Wrestling: July '88 1988
Cast
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WWE Maple Leaf Wrestling: April '88 1988
Cast
WWE WrestleMania IV 1988
Cast
WrestleMania IV (Duplicated) 1988
Cast
Brutus "The Barber" Beefcake 1988
Cast
The Best of the WWF: volume 14 1987
Cast
Wrestling's Most Embarrassing Moments 1987
Cast
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WWE Houston Wrestling: December '87 1987
Cast
WWE Survivor Series 1987 1987
Cast
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WWE Houston Wrestling: October '87 1987
Cast
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WWE Maple Leaf Wrestling: June '87 1987
Cast
The Best of the WWF: volume 11 1987
Cast
WWE WrestleMania III 1987
Cast
WrestleMania III (Duplicated) 1987
Cast
The Best of the WWF: volume 10 1987
Cast
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WWE Maple Leaf Wrestling: January '87 1987
Cast
No poster
WWE Wrestling at The Meadowlands: January '87 1987
Cast
Bob Uecker's Wacky World of Sports 1987
Cast
Inside the Steel Cage 1986
Cast
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WWE Houston Wrestling: October '86 1986
Cast
The British Bulldogs 1986
Cast
As director
No directing credits found.