Mark Sinacori on Glee "Preggers" as a teacher in the breakroom (later referenced in the opening scene of "Sectionals" as "Mr. Sinacori the creepy math teacher who always sings down the halls" (2009, FOX)

Mark Sinacori paging at The Price is Right and ending up in the show logo on the episode that aired on 6/6/07 (CBS, 2007)

Mark Sinacori on Grey's Anatomy "Unaccompanied Minor" as a Hospital Staffer (2011, ABC)

Mark Sinacori on Greys Anatomy "Love, Loss and Legacy" as a Hospital Staffer to the left of Sara Drew (ABC, 2011)

Filmed: September 1, 2011

Mark Sinacori on Desperate Housewives "You Take For Granted" as a Steel Worker being pushed aside by Eva Longoria (ABC, 2012)

Filmed: January 27, 2012

Mark Sinacori on Men Of A Certain Age "And Then The Bill Comes" as a Mechanic (TNT, 2011)

Filmed: September 13, 2010

Mark Sinacori at the Fuller House audience holding area at gate 8 at Warner Bros. prior to the taping of the Pilot (July 31, 2015)

Mark Sinacori as a Hospital Staffer on Grey's Anatomy to the left of Patrick Dempsey and Chyler Leigh in the episode "Put Me In Coach" (ABC, 2011)

AP photo from Bob Barker's final taping of The Price Is Right. Here, Bob Barker has left the taping and Mark stands between the first and second bidder podium area as the last of Bob's final audience exits. Onstage, confetti that was thrown throughout the episode is scattered along bidders row, and Bob Barker's Producer Chair and his legendary corded Microphone rest atop of it (June 6, 2007 CBS)

Taken on June 6, 2007, this was just after Bob Barker taped his final taping of The Price Is Right. Rich Fields, the announcer, comes out to greet the crowd after the taping as Mark stands just below Rich's podium in his red page jacket and guards that side of the studio

AP photo from Bob Barker's final taping of The Price Is Right. Bob Barker speaks to the audience during the tape stop after the first game played onstage as Mark Sinacori, guards stage right by Rich Field's announcer podium in his red Page jacket and  waves his fist in the air, pumping up the audience to chant "Bob! Bob!  Bob!" (June 6, 2007, CBS)

Mark Sinacori on Men Of A Certain Age "And Then The Bill Comes" as a Mechanic (2011, TNT)

Mark Sinacori at the series finale taping of The Ranch in May of 2019 at Sunset Bronson Studios in Hollywood

Mark Sinacori as an Officer on Criminal Minds in the episode "The Company" (2012, CBS)

Mark Sinacori on the set of Fuller House after the 4th taped episode of season 5 (June 28, 2019)

Mark Sinacori at the Nickelodeon Reboot of All That (June 2019)

Mark Sinacori Paging and dancing with the 99th audience member out in line prior to the taping of Bob Barker's final episode of The Price Is Right 6/6/07, CBS)

Mark Sinacori Paging by the stage and getting everyone to cheer prior to the taping of Bob Barker's final episode of The Price Is Right (6/6/07, CBS)

Mark Sinacori at the Pilot taping of the reboot of Nickelodeon's All That at the Burbank Studios (May 2019)

Mark Sinacori at the wrap party of Netflix's The Ranch at Sunset Bronson Studios in Hollywood  after the season 4 finale taping (May 2019)

Mark Sinacori at gate 3 at Warner Bros about to do trivia with the audience of the Roseanne spin-off The Conners (October 2018)

Mark in the Doritos Spec Commercial "Legally Blind Director"

Written by: Eric Castle/Mark Sinacori 

Directed by: Eric Castle

Mark Sinacori on Greys Anatomy "Unaccompanied Minor" as a Hospital Staffer to the left of Daniel Sunjata (ABC, 2011)

Filmed: April 7, 2011

Mark as the Red Jacket Dude in The Red Jacket Dudes (2007)

Mark Sinacori Paging at an episode of The Price Is Right that aired in early April 2007 (CBS, 2007)

Taken on jib cam, a screecap of Mark Sinacori paging at The Price Is Right at Bob Barker's final show. Mark claps on the white platform in the back of the studio as Dean Lindstrom is called down. (CBS, 2007)

Mark on the series The Defenders as a Courthouse Pedestrian in the episode "Vegas Vs. Reid" (2010, CBS)

Filmed: August 3, 2010

Mark as Casper alongside Martha Lamplay in his first short film Womanizer written by him and directed by John Blyth Barrymore of the Hollywood Barrymore family. 

Mark, to the left side of the photo as a J Chrome Exec. in the short film "Me And My Old Man (2008)

Mark as Jamie Stacie in the short film "Common Bond" (2008)