Make Your Own Trailer (partially lost entries for THX contest; 2006-2007)
From The Lost Media Wiki
In 2006, THX operated a contest for fans to create a trailer. Winners of the contest would get their trailer featured on the THX website and recieve a THX Director's Chair. Many entries were submitted, but ten were chosen and won, and as of 2017, only six are easily watchable on YouTube (with one of the six also being on Vimeo).