Sypnos:

The Man from Earth is a 2007 American science fiction drama film directed by Richard Schenkman. It was written by Jerome Bixby, who conceived the screenplay in the early 1960s and completed it on his deathbed in April 1998. It stars David Lee Smith as John Oldman, a departing university professor, who puts forth the notion that he is more than 14,000 years old. The entire film is set in and around Oldman's house during his farewell party and consists almost entirely of dialogue. The plot advances through intellectual arguments between Oldman and his fellow faculty members. The screenplay mirrors similar concepts of longevity which Bixby had introduced in "Requiem for Methuselah", a Star Trek episode he wrote which originally aired in 1969. The Man from Earth gained recognition in part for being widely distributed through Internet peer-to-peer networks, which raised its profile. The film was later adapted by Schenkman into a stage play.