Simplify the following text for a Grade 10 native English-speaking person.
Original: Gerry Anderson MBE ( born 14 April 1929 ) is a British publisher , producer , director and writer , famous for his futuristic television programs , particularly those involving specially modified marionettes , a process called `` Supermarionation '' .
Simplified: Gerry Anderson MBE ( born April 14 , 1929 ) is a English television and movie producer , director and writer .