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 1,500 extras were used. At each successive take, the extras were rearranged and moved into a different quadrant away from the camera. With the help of computers, the extras were multiplied to create a crowd of several hundred thousand people. The film received generally positive reviews. The review aggregator website Rotten Tomatoes reported that 73% of critics gave the film a positive review, with an average rating of 7.3/10, based on a sample of 91 reviews. The website's critical consensus states, ""Forrest Gump" may be an overly sentimental film with a somewhat problematic message, but its sweetness and charm are