- Has known J.J. Abrams since they were in kindergarten.
- Has gotten parts in almost every project J.J. works on, who considers him to be a good luck charm
- Appeared in Heroes as Matt Parkman, a police officer who can read and control minds.
- Acted in several high-profile television commercials early on in his career, including one that was so memorable it landed him on The Tonight Show.
- Created and ran a successful frozen yogurt delivery service.
- Guest starred in a second-season episode of House, MD.
- Brother of Bradley "Brad" Grunberg.
- Auditioned for the role of Fred in The Flintstones in Viva Rock Vegas (2000).
- Drummer and founder of Band from TV, a musical group comprised of television actors.
- Voiced agent Ethan Thomas in the 2005 video game Condemned.
- He portrayed the role of Temmin Wexley in the 2015 film Star Wars: Episode VII The Force Awakens and in the 2019 film Star Wars: Episode IX, which was produced by J.J. Abrams, who directed, produced, and co-wrote The Force Awakens and Episode IX.
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