There's no such thing as a free Kosher Chinese buffet. Of at least the one that was advertised to go along with Matisyahu's show at the Theatre of Living Arts on South Street on Christmas eve is not happening. That's because next Thursday's show by the Hasidic reggae singer Matisyahu has been cancelled. The reason given: "Unforeseen circumstances," upon which his publicist would not elaborate. His appearance at the Wachovia Center after the Sixers game on Jan 13th as part of Jewish Heritage Night is still on, however. Below is a clip from Letterman back in 2006.