Photo Above: Bob Marley, Mick Jagger and Peter Tosh Individually, these A-list actors, musicians, politicians, and businessmen are stars in their own right, but put them together and suddenly these candid shots, of two or more celebrities hanging out, become all that more epic.    Al Pacino and Christopher Walken   Alfred Hitchcock & Francois Truffaut   Arnold Schwarznegger and Muhammad A…