In addition to being a musician, Sennett was a teen actor, appearing on the television shows Salute Your Shorts and Boy Meets World.

He attended La Jolla High School with his future Rilo Kiley bandmate Pierre De Reeder.

During this period he ended up playing two big supporting roles of Ronnie Pinsky on Salute Your Shorts and Joseph "Joey the Rat" Epstein on Boy Meets World.

After Salute Your Shorts was canceled and his role on Boy Meets World was written off, Sennett switched gears and began to focus on music.

[4] Because of a lawsuit brought by stars Leonardo DiCaprio and Tobey Maguire, this film cannot be distributed in the United States or Canada.