“Electricity has given so much comfort to womankind – the vacuum cleaner, the pop-up toaster and the automatic ice dispenser. And perhaps above all, it gave her the vibrator” (Natalie Angier, The New York Times). Passion & Power is an entertaining documentary that explores the controversial history of the vibrator, from the Victorian era – when doctors used the device to relieve women of “hysteria” – through the sexual revolution of...