[5] In an interview with Wired, Starr said that he felt "frustrated and depressed" at 22 due to lack of offers in the years after Freaks and Geeks was cancelled.

[9] Starr then had a number of guest appearances and one-time roles on shows such as Ed, Mysterious Ways, Providence, King of the Hill, and Normal, Ohio.

The same year, he had small appearances in Superbad and Walk Hard: The Dewey Cox Story, both of which were produced by Apatow.

[13] From 2011 to 2013, he co-starred on the Adult Swim television series NTSF:SD:SUV::, in which he played Sam Stern.

In 2011, Starr had a major role in the film A Good Old Fashioned Orgy and also had guest appearances on television series such as Mad Love, Community, and Childrens Hospital.

[13] The same year, he had a supporting role in the thriller film Deep Dark Canyon, as well as guest-starring on sitcoms Parks and Recreation and New Girl.

[14] In 2019, Party Down's co-creator and producer Dan Etheridge announced plans for a reunion with the original cast (including Starr) during a discussion at Vulture Festival.