To celebrate five years of The Happiness Lab, Dr Laurie has picked out the five episodes she loves the most. And this is a special one - Nerd Out! The Happiness of Being a Fan. 

Really love a TV show; a boyband; a sci fi movie; or a celebrity? We're often too embarrassed to admit adoring some things for fear that we'll be seen as frivolous or childish - but we may be missing out on the happiness benefits that geeking out can bring.   

Dr Laurie explores the joy of fandom with Benedict Cumberbatch obsessive Tabitha Carvan, YA author Jennifer Lynn Barnes and Star Trek actor (and geek-vangelist) Wil Wheaton.