Hollywood Prostitute. Anyone with little or no acting ability that trades dignity and honor for money by accepting acting roles in poorly written and unfunny comedies, undramatic dramas, and other lowest common denominator television shows or movies.
"Tom Cruise is such a Bob Saget."
America's Funniest Home Videos is so bad.
How bad is it?
It's got Bob Saget. (This might be interpreted as a double negative but it isn't one.)
Paris Hilton is such a Bob Saget!