Elements of both Marion & Geoff's agonising pathos and the squirm-inducing embarrassment of I'm Alan Partridge feature prominently here as the merciless portrayal of geeky fandom slowly gives way to a more gentle, affectionate portrait of people whose lives were inexplicably touched by the fantastically awful Children of Castor (imagine a camp cross between Blake's 7 and The Tomorrow People). Unlike the sympathetically pathetic ex-husband of Marion, here Brydon plays a cruelly cynical and embittered character, whose self-loathing contrasts painfully with the annoying ebullience of Coogan's superstar. The supporting cast are all a delight, too: witness lugubrious Philip Jackson, as alcoholic writer Hugh Bispham, clashing hilariously with Walliams' deadly earnest super-fan over the interpretation of names in the show, which turn out to be nothing more cryptic than anagrams of Bispham's favourite curries. James Corden and Helen Coker are emotionally fragile followers whose lives intertwine unexpectedly with their heroes, while Brian Conley and Jack Jones gamely provide cameos. --Mark Walker