Movies:
- Halloween (2018): Courtney portrayed Michael Myers, the main antagonist in this slasher film directed by David Gordon Green.
- Halloween Kills (2021): Courtney reprised his role as Michael Myers in the sequel to the 2018 Halloween movie.
- Halloween Ends (2022): Courtney once again played Michael Myers in the third installment of the Halloween trilogy.
- The Crow: Wicked Prayer (2005): Courtney had a supporting role as The Crow in this supernatural thriller film.
- The Lords of Salem (2012): Courtney portrayed Herman Jackson, a member of a coven in this horror movie directed by Rob Zombie.
- The Devil's Rejects (2005): Courtney played Billy Ray Snapper, a member of a murderous family in this horror film also directed by Rob Zombie.
- Trick 'r Treat (2007): Courtney had a small role as Charlie in this anthology horror film.
Television Projects:
- Buffy the Vampire Slayer: Courtney had a recurring role as the vampire Spike on the popular supernatural drama series.
- Angel: Courtney reprised his role as Spike on this spin-off series of Buffy the Vampire Slayer.
- Charmed: Courtney guest-starred on this fantasy series about three witch sisters.
- Supernatural: Courtney had a guest role on this long-running paranormal drama series.
- The Walking Dead: Courtney played Morgan Jones, a main character in this zombie apocalypse drama series.
- Dexter: Courtney had a recurring role as Dexter's brother on this crime drama series.