John Wisniski Jr.

Acting·Sep 20, 1951·Seattle, Washington, USA

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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.

Film	Credit
Midnight Massacre2025 · Caepio	Caepio
Chris Jericho's 30th Anniversary Celebration2020 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
350 Days2019 · Self	Self
Headstrong2019 · Self	Self
WWE: The U.S. Championship: A Legacy of Greatness2016 · Greg 'The Hammer' Valentine (archive footage)	Greg 'The Hammer' Valentine (archive footage)
Behind the Ropes: The Greatest Fraternity in the World2015 · Himself	Himself
At What Cost? Anatomy of Professional Wrestling2015 · Himself	Himself
WWWE: 150 Best Pay-Per-View Matches, Vol 12014 · Himself	Himself
WWE: Starrcade - The Essential Collection2012 · Himself	Himself
JJCW Legends and Icons2011 · Actor	Actor
Timeline The History of WWE – 1985 – As Told By Greg Valentine2011 · Himself	Himself
WWE: The History Of The Intercontinental Championship2008 · Himself	Himself
WWE: The History Of The WWE Championship2006 · Actor	Actor
The Greatest Wrestling Stars of the '80s2005 · Self	Self
WWorld Wrestling Legends: 6:05 - The Reunion2005 · Greg Valentine	Greg Valentine
WWE Hall of Fame 20042004 · Self	Self
Heroes of Wrestling1999 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WCW World War 3 19971997 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Royal Rumble 19941994 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Survivor Series 19931993 · The Blue Knight	The Blue Knight
The Immortal Hulk Hogan1992 · Greg Valentine	Greg Valentine
WCW Clash of The Champions XX: 20th Anniversary1992 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WCW Beach Blast1992 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WCW WrestleWar 19921992 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE SuperTape: Volume 51992 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Royal Rumble 19921992 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Rampage '911991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE SummerSlam 19911991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE WrestleFest '911991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE U.K. Rampage 19911991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Mega Matches1991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE WrestleMania VII1991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Superstars & Stripes Forever: The March to WrestleMania VII1991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Funniest Moments1991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Royal Rumble 19911991 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Survivor Series 19901990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Hottest Matches1990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
Battle of the WWE Superstars1990 · Greg Valentine	Greg Valentine
WWE SuperTape: Volume 21990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWF/AJPW/NJPW Wrestling Summit1990 · Actor	Actor
WWE The Ultimate Challenge Special: The March to WrestleMania VI1990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
Wrestling Superheroes1990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Royal Rumble 19901990 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE Survivor Series 19891989 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
WWE SummerSlam 19891989 · Greg Valentine	Greg Valentine
Demolition: Witness the Power1989 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine
Fan Favorites1989 · Greg Valentine	Greg Valentine
The Best of the WWF: volume 201989 · Greg "The Hammer" Valentine	Greg "The Hammer" Valentine