John Wisniski Jr.
ActingJohn 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.
Movies
Caepio
Midnight Massacre
2025
Greg "The Hammer" Valentine
Chris Jericho's 30th Anniversary Celebration
2020
Self
350 Days
2019
Self
Headstrong
2019
Greg 'The Hammer' Valentine (archive footage)
WWE: The U.S. Championship: A Legacy of Greatness
2016
Himself
Behind the Ropes: The Greatest Fraternity in the World
2015
Himself
At What Cost? Anatomy of Professional Wrestling
2015
Himself
WWE: Starrcade - The Essential Collection
2012
Himself
Timeline The History of WWE – 1985 – As Told By Greg Valentine
2011
Himself
WWE: The History Of The Intercontinental Championship
2008
WWE: The History Of The WWE Championship
2006
Self
The Greatest Wrestling Stars of the '80s
2005
Self
WWE Hall of Fame 2004
2004
Greg "The Hammer" Valentine
Heroes of Wrestling
1999
Greg "The Hammer" Valentine
WCW World War 3 1997
1997
Greg "The Hammer" Valentine
WWE Royal Rumble 1994
1994
The Blue Knight
WWE Survivor Series 1993
1993
Greg Valentine
The Immortal Hulk Hogan
1992
Greg "The Hammer" Valentine
WCW Clash of The Champions XX: 20th Anniversary
1992
Greg "The Hammer" Valentine
WCW Beach Blast
1992
TV Shows
Greg "The Hammer" Valentine
Biography: WWE Legends
2021
Greg "The Hammer" Valentine
WWE's Most Wanted Treasures
2021
Greg Valentine (archive footage)
Undertaker: The Last Ride
2020
Greg Valentine
All Elite Wrestling: Dynamite
2019
Greg "The Hammer" Valentine
Raw
1993
Greg "The Hammer" Valentine
Clash of the Champions
1988
Greg Valentine
WWF Wrestling Challenge
1986
Greg "The Hammer" Valentine
WWF Wrestling Challenge
1986
Greg "The Hammer" Valentine
WWF Superstars
1986
Greg Valentine
WWE Saturday Night's Main Event
1985
WWE Saturday Night's Main Event
1985
Greg "The Hammer" Valentine
WWE Saturday Night's Main Event
1985
Greg "The Hammer" Valentine
Tuesday Night Titans
1984
Greg Valentine
Tuesday Night Titans
1984
Greg Valentine
WCW Arena Shows
1983
Greg Valentine
Mid-Atlantic Championship Wrestling
1981
Greg Valentine
WWF All-Star Wrestling
1975
Greg 'The Hammer' Valentine
WWF All-Star Wrestling
1975
Greg Valentine
WWE Old School
1973
Greg "The Hammer" Valentine
WWE Old School
1973