Simon Ennis’s Lunarcy! is an affectionate, knowing documentary that looks at a diverse group of individuals who share an obsession with the moon. The star of the piece is Christopher Carson, whose enterprise, The Luna Project, is aimed at kick-starting the process of moon colonisation. Armed with the slogan, Luna City or Bust!, he travels to science fiction conventions, high schools – anywhere he might find a disproportionate number of geeks – spreading the word and raising money to get his project off the ground. If this was a dramatic film, he would have to be played by a young Jeffrey Combs – he has that combination of weird wit and obscure intelligence – but is a lot more self-aware than he initially appears.