As seen through the blurred eyesight of the coolest cats of the sixties, When Hippies Ruled The World (Wednesday 10 April, BBC ONE) takes a trip back to the end of the psychedelic Sixties - the dreams, trips, movies, and music - to a time was love was all that was needed. From 1967 to 1970, the hippie revolution gave us great anthems, great events, great sex and great big afghan coats. The music was by The Doors; queen of the hippies Joni Mitchell; and the world was set alight by the number one hit Fire by The Crazy World of Arthur Brown. Hippies dropped out at the biggest festival, Woodstock, and were turned on by LSD and free love. The whole experience was literally set on film by Dennis Hopper and Peter Fonda in Easy Rider while the hippest of all looked East and followed in the trail of the Beatles to India. Interviewees include singer Joni Mitchell - in her first ever British TV interview; Ray Manzarek of The Doors; musician Arthur Brown; actor Dennis Hopper; actress Susan George; Graham Nash of Crosby, Stills and Nash; Nigel Planer (Neil from The Young Ones); Alan Whicker; Hippies Wavy Gravy and Mick Farren; DJ John Peel.