The Stones' compilation Forty Licks is one of the few albums I can remember actually buying - I was sixteen, on a Univeristy open day in Cambridge (yeah, that turned out well...), and bought it from a Woolworths while exploring the city. Is this the Stones' best album? Debatable; they have so many great records. But this offering is nothing but amazing psychedelic rock. Enjoy.
The Rolling Stones - Their Satanic Majesties Request (1967)