- Studied acting with Uta Hagen.
- Had a recurring role on The Big Bang Theory starting with its second season, and was promoted to series regular in 2012 for the sixth season.
- Plays the owner of a comic-book store in The Big Bang Theory, and once worked at a similar establishment in New York City.
- Both of his parents are schoolteachers.
- Has appeared in more than 30 national TV commercials, including ads for Eggos and FedEx.