| 1998 | Cast as cousin Danny Heffernan on the CBS sitcom 'The King of Queens,' a role he played for all nine seasons while also writing several episodes of the series. |
| 2003 | Appeared in the Farrelly Brothers comedy 'Stuck on You' alongside Matt Damon and Greg Kinnear, expanding his film resume beyond the television world. |
| 2007 | Co-starred with Adam Sandler and Kevin James in Universal's 'I Now Pronounce You Chuck and Larry,' the same year his work on 'The King of Queens' wrapped its final season. |
| 2009 | Appeared in 'Paul Blart: Mall Cop' alongside Kevin James, part of a string of Sony/Happy Madison feature films that kept Valentine on multiplexes nationwide. |
| 2012 | Joined Kevin James again in 'Here Comes the Boom,' the MMA-themed comedy produced by Adam Sandler's Happy Madison Productions for Sony Pictures. |
| 2016 | Cast as Kyle Gable, Kevin's fireman brother, on the CBS sitcom 'Kevin Can Wait,' reuniting with his real-life brother Kevin James for a two-season network run. |
| 2022 | Appeared in the Netflix sports comedy 'Home Team,' where Kevin James plays suspended NFL coach Sean Payton and Valentine is once again part of the ensemble. |
| 2024 | Continues to perform stand-up all over the country as a headline act, touring clubs and theaters on the national circuit with the same material that has anchored his reputation as a road veteran. |
| 1990s | Built his stand-up foundation as a regular at the Comic Strip Live in New York City, developing the sharp blue-collar observational voice that would carry him from the club circuit to network television. |
A stand-up veteran, Gary Valentine – or “GV” as he’s commonly referred to – works all over the country. He has made the jump from stand up to acting. He’s best known for his recurring role on the hit CBS show The King of Queens. He has also appeared on such shows as The Tonight Show, Conan O’Brien, The Late Show with Craig Kilborn and his own half hour Comedy Central special. GV also co- hosted The X Show on FX and was a regular on Chelsea Lately. Some of Gary’s feature film credits include Mall Cop, I Now Pronounce You Chuck And Larry, Stuck On You, Zookeeper, Here Comes The Boom and Paul Blart: Mall Cop 2. “GV” is a home run.