In 2009, he hosted and starred in his own TV show “Important Things With Demetri Martin” on Comedy Central.
Martin has recorded a comedy album titled “These Are Jokes”.
He has also starred in Fountains of Wayne music video for "Someone to Love", a video for the Travis single "Selfish Jean", the season finale of the HBO series Flight of the Concords, etc. He grew up in Toms River on the shores of New Jersey with his family, including his younger brother Spyro.
He worked at temp jobs, then become a full-time proofreader, do hundreds of stand-up shows, some comedy festivals, a couple of writing jobs, some screenplays, two pilot scripts, and about twenty minutes of Pilates The world first caught Martin exquisite comedic talents when they first saw him on Comedy Central’s stand up showcase “Premium Blend”.In 2003, Demetri won the Perrier Award at the International Fringe Festival for his first one-man show, If I.He released a comedy album called These Are Jokes and then created and starred in his own television series called Important Things with Demetri Martin. Person is considered by many to be his longest and only hour-long stand-up comedy special.In 2005, he was credited as a contributor on The Daily Show.As of 2014, he is no longer a contributor of The Daily Show.