EVERYthing Harryhausen and Hammer films with Vincent Price.
Lots of 1960s messes are my guilty pleasures!
"Love Story," "Fantastic Voyage," "Robinson Crusoe on Mars," "Valley of the Dolls," "Journey to the Center of the Earth," "Hush, Hush Sweet Charlotte," "Whatever Happened to Baby Jane?" "Carnival of Souls," "The Haunting."
Nearly all future dystopian films: "Logan's Run," "Soylent Green," "Omega Man," "Planet of the Apes," "The Stepford Wives"
Earlier: "Moontide," "Margie," "1984," "Suddenly Last Summer," "Cleopatra," "Demetrius & The Gladiators," "On the Town"
There are plenty more where these came from!