Galaxy Quest is one of my favorite space comedies, as it perfectly parodies the Star Trek universe without trashing it. The film is about over-the-hill actors from a Star Trek-like TV series (called Galaxy Quest, of course) who have to go a real-life space adventure. Just before the film was released in 1999, E! aired a special called “GalaxyQuest: 20th Anniversary The Journey Continues”, which was a mockumentary about the fictional series, in which everyone is in-character. io9 found the whole thing uploaded online, so you can watch it all below!