While there is no readily available information about a person named "Keith Gallen" involved in film and television, Keith Gallini has been involved in several projects, including:
Movies:
* "The Last Boy Scout" (1991): as a Thug (uncredited)
* "Wayne's World" (1992): as a Bar Patron
* "The Santa Clause" (1994): as a Toy Store Employee
* "A Very Brady Sequel" (1996): as a Studio Security Guard
* "The Waterboy" (1998): as a Football Player
* "Austin Powers: International Man of Mystery" (1997): as a Party Guest (uncredited)
* "Austin Powers: The Spy Who Shagged Me" (1999): as a Party Guest (uncredited)
* "The Wedding Planner" (2001): as a Wedding Guest
* "Bruce Almighty" (2003): as a News Crew Member (uncredited)
* "The Longest Yard" (2005): as a Prisoner
* "Click" (2006): as a Construction Worker
* "Talladega Nights: The Ballad of Ricky Bobby" (2006): as a NASCAR Fan (uncredited)
* "The Hangover" (2009): as a Wedding Guest
* "21 Jump Street" (2012): as a Police Officer
* "Ted" (2012): as a Bar Patron
Television:
* "The Fresh Prince of Bel-Air" (1990-1996): as various roles
* "Mad About You" (1992-1999): as various roles
* "Frasier" (1993-2004): as various roles
* "Friends" (1994-2004): as various roles
* "Seinfeld" (1989-1998): as various roles
* "Curb Your Enthusiasm" (2000-present): as various roles
* "Entourage" (2004-2011): as various roles
* "The Big Bang Theory" (2007-2019): as various roles
* "Modern Family" (2009-2020): as various roles
* "Two and a Half Men" (2003-2015): as various roles
This is not an exhaustive list, but it gives you a good idea of his work. If you are interested in learning more about Keith Gallini, you can search for him on IMDb or other online databases.