On the subject of impressive focus on detail, comes this amusing exercise…Mapping the various timelines in the collection of back to the Future movies to allow for the creation of alternate timelines due to time travel. This Wikipedia entry charts the various characters, their ancestors and particular events and attempts to portray all the skipping around through time in a straight forward chart. The author does an great job…this is information distillation extremely well accomplished. The article is fun in its own right, but the imagining of the alternate timelines is particularly astute.
