story by Laura Gjovaag Slightly more than 50 years ago, a Canadian television producer had an idea for a family-friendly science fiction show that could fill a Saturday time slot on the BBC... 50 years later the show is considered a British institution and has fans around the world. The show, “Doctor Who,” was originally conceived by Sydney Newman, a Canadian working for the BBC. It was also notable for being initially produced by Verity Lambert, the only female producer at the corporation in 1963. “Doctor Who” is about a time traveler who visits places throughout time and space using a time machine that is bigger on the inside than the outside. The Doctor, the main character, also takes along other people on the adventures, which tend to be exciting and dangerous. The show ran 26 years on the BBC before being canceled in 1989. An American company produced a TV movie in 1996. Then in 2005 the series was relaunched to rave reviews. Filmed in Cardiff, Wales, the show has led to a very popular tourist attraction, The Doctor Who Experience. This weekend, on Saturday, Nov. 23, the show will celebrate its 50th anniversary with a special episode that will be shown in movie theaters throughout the United States at the same time it airs on British television. In Seattle, the Experience Music Project Museum will be holding a celebration starting at 7 p.m.