Year Title Role Notes 2014 Impractical Jokers Himself Episode: "Look Out Below" 2016 Little Big Shots Guest judge Episode: "The Idom of Love" 2017 Law & Order: Special Victims Unit Theo Lachere Episode: "Chasing Theo" 2017–2019 Big Little Lies Ziggy Chapman Main Role 2017–present Young Sheldon Sheldon Cooper Lead role 2018 Jeopardy! Video Clue giver 6 episodes 2018 The Big Bang Theory Young Sheldon Cooper Episode: "The VCR Illumination"