Demetri Martin -- (born May 25, 1973, in New York City, NY) is a comedian, actor, artist, musician, writer, and all-around humorist. Martin is best known his own show on Comedy Central titled Important Things with Demetri Martin, but he is also a highly regarded stand-up comedian and he has worked as a contributor on The Daily Show and Late Night with Conan O'Brien.
According to Wikipedia, Martin is known for being an unconventional stand-up comic. He uses extensive wordplay (particularly paraprosdokians), one-liners, drawings on a "large pad," as well as accompanying his jokes with music on either guitar, harmonica, piano, keyboard, glockenspiel, toy bells, or tambourine—sometimes all at once. He has cited comedian Steven Wright as an important influence; both (as well as Mitch Hedberg) use deadpan one-liners as the crux of their comedy routine.
In 2009, Demetri Martin starred in the Ang Lee film Taking Woodstock, which caused some confusion amongst movie-goers since the film was NOT AT ALL a comedy.