Filmography98 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | For the Love of Star TrekMovie | Self | 54 |
| 2025 | Tales from WoodcreekSeries | Eldorae the Witch of the Old Wood | 53 |
| 2025 | DIY: The Rise and Fall and Rise of PunkMovie | Self | 53 |
| 2024 | DC Studios Showcase: The Official PodcastSeries | Self | 52 |
| 2023 | Faster, Purple Worm! Kill! Kill!Series | Azagoron | 51 |
| 2023 | Attack of the Doc!Movie | Self | 51 |
| 2022 | Celebrity Jeopardy!Series | Self - Contestant | 50 |
| 2022 | In Search of TomorrowMovie | Self - Interviewee | 50 |
| 2021 | Star Trek: ProdigySeries | Wesley Crusher (voice) | 49 |
| 2020 | Star Trek: PicardSeries | Wesley Crusher | 48 |
| 2020 | Star Trek DaySeries | Self - Host | 48 |
| 2020 | Showbiz KidsMovie | Self | 48 |
| 2020 | Max Reload and the Nether BlastersMovie | Arcade Heroes Narrator (voice) | 48 |
| 2019 | Never Surrender: A Galaxy Quest DocumentaryMovie | Self | 47 |
| 2019 | The Ready RoomSeries | Self - Host | 47 |
| 2018 | Teen Titans Go! To the MoviesMovie | Flash (voice) | 46 |
| 2018 | Transformers: Power of the PrimesMovie | Perceptor (voice) | 46 |
| 2017 | S.W.A.T.Series | Evan Whitlock | 45 |
| 2017 | Mystery Science Theater 3000Series | Drake | 45 |
| 2017 | Bill Nye Saves the WorldSeries | Self - Panelist | 45 |
| 2017 | Transformers: Titans ReturnMovie | Perceptor (voice) | 45 |
| 2016 | Neil Gaiman: Dream DangerouslyMovie | Self | 44 |
| 2015 | Dark MatterSeries | Alexander Rook | 43 |
| 2015 | SupergirlSeries | Doomsday Protestor | 43 |
| 2015 | Critical RoleSeries | Thorbir Falbek | 43 |
| 2015 | Celebrity Family FeudSeries | Self - Contestant | 43 |
| 2015 | PowersSeries | Conrad Moody | 43 |
| 2015 | Titansgrave: The Ashes of ValkanaSeries | Game Master | 43 |
| 2014 | Sharknado 2: The Second OneMovie | Passenger | 42 |
| 2014 | To Be TakeiMovie | Self | 42 |
| 2013 | @midnight with Chris HardwickSeries | Self | 41 |
| 2013 | Whose Line Is It Anyway?Series | Self | 41 |
| 2011 | Underground Entertainment: The MovieMovie | Scapegoat #1 | 39 |
| 2010 | Ben 10: Ultimate AlienSeries | Mike Morningstar / Darkstar (voice) | 38 |
| 2009 | Star TrekMovie | Romulan (voice) (uncredited) | 37 |
| 2009 | The Great DebateSeries | — | 37 |
| 2008 | LeverageSeries | Colin Mason | 36 |
| 2008 | Batman: The Brave and the BoldSeries | Silver Age Blue Beetle (voice) | 36 |
| 2008 | Ben 10: Alien ForceSeries | Darkstar (voice) | 36 |
| 2008 | Seth MacFarlane's Cavalcade of Cartoon ComedySeries | Himself | 36 |
| 2007 | The Big Bang TheorySeries | Wil Wheaton | 35 |
| 2007 | The GuildSeries | Fawkes | 35 |
| 2007 | Americanizing ShelleyMovie | Director Alan Smithee | 35 |
| 2006 | EurekaSeries | Isaac Parrish | 34 |
| 2006 | Child Star ConfidentialSeries | Self | 34 |
| 2005 | Numb3rsSeries | Miles Sklar | 33 |
| 2005 | Criminal MindsSeries | Floyd Hansen | 33 |
| 2005 | Robot ChickenSeries | Dr. Doom / Centaur / State Farm Representative (voice) | 33 |
| 2005 | American Dad!Series | Co-Worker (voice) | 33 |
| 2005 | Avatar: The Last AirbenderSeries | Pet Shop Owner (voice) | 33 |
| 2005 | Made in HollywoodSeries | Self | 33 |
| 2004 | Best Week EverSeries | — | 32 |
| 2004 | My Coolest YearsSeries | Himself | 32 |
| 2003 | Teen TitansSeries | Aqualad (voice) | 31 |
| 2003 | NeverlandMovie | John Darling | 31 |
| 2002 | The Flintstones: On the RocksMovie | Singer (bass) (voice) | 30 |
| 2001 | Foreign CorrespondentsMovie | Jonas | 29 |
| 2001 | Beat the GeeksSeries | — | 29 |
| 2001 | The Good ThingsMovie | Zach Means | 29 |
| 2000 | CSI: Crime Scene InvestigationSeries | Walter | 28 |
| 2000 | Deep CoreMovie | Rodney Bedecker | 28 |
| 2000 | Walking the Tracks: The Summer of Stand by MeMovie | Self | 28 |
| 1999 | Twice in a LifetimeSeries | Ryan Storey / Dr. Thomas | 27 |
| 1999 | Family GuySeries | Wil Wheaton (voice) | 27 |
| 1998 | The Day Lincoln Was ShotMovie | Robert Todd Lincoln | 26 |
| 1997 | GunSeries | Bilchic | 25 |
| 1997 | FlubberMovie | Bennett Hoenicker | 25 |
| 1997 | Perversions of ScienceSeries | Bryan | 25 |
| 1997 | TrekkiesMovie | Self | 25 |
| 1995 | The Outer LimitsSeries | Cadet | 23 |
| 1995 | Hang TimeSeries | — | 23 |
| 1995 | Mr. StitchMovie | Lazarus | 23 |
| 1993 | Diagnosis: MurderSeries | Forest Ranger Gary Barton | 21 |
| 1993 | SirensSeries | Wayne McGarrick | 21 |
| 1991 | Toy SoldiersMovie | Joey Trotta | 19 |
| 1991 | The Last ProstituteMovie | Danny | 19 |
| 1991 | DecemberMovie | Kipp Gibbs | 19 |
| 1990 | Nickelodeon Studios Opening Day Celebration!Movie | — | 18 |
| 1990 | 8:15 from ManchesterSeries | — | 18 |
| 1989 | Tales from the CryptSeries | Arling | 17 |
| 1989 | My Dad Can't Be Crazy... Can He?Movie | Nick Karpinsky | 17 |
| 1988 | She's Having a BabyMovie | Wil Wheaton (uncredited) | 16 |
| 1988 | MonstersSeries | Kevin | 16 |
| 1987 | Star Trek: The Next GenerationSeries | Wesley Crusher | 15 |
| 1987 | The Man Who Fell to EarthMovie | Billy Milton | 15 |
| 1987 | Kids' Choice AwardsSeries | Himself - Host | 15 |
| 1987 | The CurseMovie | Zack | 15 |
| 1986 | Long Time GoneMovie | Mitchell | 14 |
| 1986 | The Defiant OnesMovie | Clyde | 14 |
| 1984 | Highway to HeavenSeries | — | 12 |
| 1984 | The Buddy SystemMovie | Tim | 12 |
| 1984 | The Last StarfighterMovie | Louis' Friend | 12 |
| 1983 | Hambone and HillieMovie | Jeff Radcliffe | 11 |
| 1982 | St. ElsewhereSeries | Owen Drimmer | 10 |
| 1982 | Family TiesSeries | Timothy Higgins | 10 |
| 1982 | The Secret of NIMHMovie | Martin (voice) | 10 |
| 1981 | A Long Way HomeMovie | Donald Branch, age 8 | 9 |
| 1972 | ABC Afterschool SpecialSeries | Nick Karpinsky | — |