November 17, 2003 -- GIL Scott-Heron - the poet/singer who is considered a forefather of rap - had a good excuse for not showing up at his recent gigs at the Knitting Factory and S.O.B.'s. The author of "Whitey's on the Moon" is in jail, New York magazine reports - "and not for lying about the whole 'revolution will not be televised' thing," the mag cracks. Scott-Heron was arrested in Queens on Oct. 30 on drug charges and still hasn't made $10,000 bail.