Home People William B. Kaplan William B. Kaplan movies William B. Kaplan movies William B. Kaplan Movies (34) Music (1969) As Sound Mixer. Guardians of the Galaxy (2014) As Sound Mixer. He was 14 years old Unstoppable (2010) As Production Sound Mixer. He was 10 years old Avatar (2009) As Production Sound Mixer. He was 9 years old A Christmas Carol (2009) As Production Sound Mixer. He was 9 years old Yes Man (2008) As Production Sound Mixer. He was 8 years old The House Bunny (2008) As Production Sound Mixer. He was 8 years old Beowulf (2007) As Sound mixer. He was 7 years old National Treasure (2004) As Sound Mixer. He was 4 years old The Polar Express (2004) As Production Sound Mixer. He was 4 years old The Polar Express (2004) As Sound Mixer. He was 4 years old House of Sand and Fog (2003) As Production Sound Mixer. He was 3 years old Terminator 3: Rise of the Machines (2003) As Production Sound Mixer. He was 3 years old xXx (2002) As Production Sound Mixer. He was 2 years old Collateral Damage (2002) As Sound Mixer. He was 2 years old Evolution (2001) As Production Sound Mixer. He was 1 years old Cast Away (2000) As Production Sound Mixer. He was 0 years old What Lies Beneath (2000) As Production Sound Mixer. He was 0 years old Contact (1997) As TV Interviewer. He was 2 years old Contact (1997) As Production Sound Mixer. He was 2 years old The Fan (1996) As Production Sound Mixer. He was 3 years old Crimson Tide (1995) As Sound mixer. He was 4 years old Forrest Gump (1994) As Production Sound Mixer. He was 5 years old True Romance (1993) As Production Sound Mixer. He was 6 years old Back to the Future Part III (1990) As Production Sound Mixer. He was 9 years old Back to the Future Part II (1989) As Production Sound Mixer. He was 10 years old Coming to America (1988) As Sound Mixer. He was 11 years old Rambo III (1988) As Sound Mixer. He was 11 years old Back to the Future (1985) As Production Sound Mixer. He was 14 years old Into the Night (1985) As Sound Mixer. He was 14 years old The Best Little Whorehouse in Texas (1982) As Sound mixer. He was 17 years old Over the Edge (1979) As Sound Mixer. He was 20 years old Animal House (1978) As Sound Director. He was 21 years old Kingdom of the Spiders (1977) As Sound Mixer. He was 22 years old