This behind-the-scenes documentary features interviews with the creators and cast of the cult comedy "The IT Crowd", plus chats with celebrity fans.

Live performance from science comedy trio Festival of the Spoken Nerd.

Festival of the Spoken Nerd are the science comedy phenomenon that will feed your brain, tickle your ribs and light your Bunsen burner. Full Frontal Nerdity guaranteed! Stand-up mathematician Matt Parker (Discovery Channel You Have Been Warned), experiments maestro Steve Mould (ITV1 I Never Knew That About Britain) and geek songstress Helen Arney (BBC2 Coast) mix astonishing science with statistically significant comedy, plus experiments that electrify their audiences – sometimes literally. Since their last smash hit tour show Full Frontal Nerdity, the Nerds have filmed their first DVD (available now) and racked up over a million views on YouTube for their experiments, songs and stand-up. As well as sell-out shows all over the UK, the Nerds have performed at Shakespeare’s Globe, Hammersmith Apollo with Robin Ince and Brian Cox, The British Library, TED, Udderbelly and Latitude Festival.

Fresh from their latest UK tour, Matt Parker, Steve Mould and Helen Arney have created yet another comedy spectacular for digital download. Packed full of science, songs and spherical geometry, the intrepid trio go further than ever to celebrate nerdiness in all its raw and unpolished glory. You Can’t Polish A Nerd is the third show from science comedy phenomenon Festival of the Spoken Nerd. It’s here to put the “ooh” into zoology, the “fun” into fundamental theorem of calculus and the “recursion” into recursion, creating the ultimate in audio-visual entertainment for nerds and non-nerds.

Thanks for reading the writing about this DVD, which is the third in the Nine Lessons and Carols series. The shows are put together each year by Robin Ince and are a beautiful hotch potch of non religuous Christmas fun. Watching this is like watching the Royal Institution Christmas lecture crossed with the Royal Variety Show. It's informative, funny and you never know what's coming next. And it has a star stuffed line up - this DVD features Robin Ince, Richard Herring, Steve Mould, Helen Arney, Matt Parker, Isy Suttie, Marcus Du Sautoy, Jo Neary, Gavin Osborn, Ian Stone, Grace Petrie, Nick Doody, Josie Long and Alan Moore.