THERE ARE ALL manner of strange jobs in Hollywood, from moth-wrangler (The Silence Of The Lambs) to orgy-choreographer (The Wolf Of Wall Street). But spare a thought for Donny, the hapless assistant to Nicolas Cage on 1988 horror-comedy Vampire’s Kiss. Reporting to the star as he resided in the penthouse suite of New York’s decrepit Mayflower Hotel — Cage’s extremely messy room adorned with fossils, weird sculptures, a prehistoric animal skeleton and a rowdy Burmese cat named Louis — Donny was tasked one evening with a peculiar task: find a bat. “He was sent out with a butterfly net to Central Park,” confirms director Robert Bierman. “And obviously poor Donny never even saw a bat. …