Modern animation in the United States films "" and "Jurassic Park" included Oscar-winning special effects sequences which made extensive use of CGI. After decades of existing as related-but-separate industries, the barrier between "animation" and "special effects" was shattered by the popularization of computerized special effects—to the point where computer enhancement of Hollywood feature films became second-nature and often went unnoticed. The Academy Award-winning "Forrest Gump" (1994) depended heavily on computerized special effects to create the illusion of Tom Hanks shaking hands with Presidents John F. Kennedy and Lyndon B. Johnson, and to make Gary Sinise convincingly appear to be a double amputee, winning a special-effects Oscar.
Forrest Gump to interfere with what was happening cinematically." The two-disc album has a variety of music from the 1950s–1980s performed by American artists. According to Sills, this was due to Zemeckis' request, "All the material in there is American. Bob (Zemeckis) felt strongly about it. He felt that Forrest wouldn't buy anything but American." The soundtrack reached a peak of number 2 on the "Billboard" album chart. The soundtrack went on to sell twelve million copies, and is one of the top selling albums in the United States. The score for the film was composed and conducted by Alan Silvestri and