Here's a comedy that tickles parts others cannot reach - or wouldn't dare touch. It's the (mostly) true story of how Dr Mortimer Granville (a twitchy Hugh Dancy) invented the vibrator, a triumph of the Victorian era that went unsung at a time when corsets and polite courtship restricted female sexual expression. Initially, Granville is employed to alleviate the symptoms of womanly "hysteria" using scented oils and a lot of elbow grease at the unorthodox but very lucrative practice of Dr Dalrymple (Jonathan Pryce). But a bad case of RSI and a prototype electrical duster devised by an eccentric pal (Rupert Everett) lead to a breakthrough that has women squealing across the land. Despite the subject matter, director Tanya Wexler's film has a somewhat coy tone, and elicits smirks and sniggers more than belly laughs. A romantic subplot involving Maggie Gyllenhaal as Dalrymple's socialist daughter helps to up the stakes, but this isn't a story of historical weight as much as feather-light fun.