The first movie I recall my parents taking me to was Sleeping Beauty in 1959 or thereabouts. I also recall 101 Dalmatians, Assault On A Queen, The Longest Day, Robin & The Seven Hoods, and others.

The first movie I remember going to see by myself without adult accompaniment was Elvis Presley's Spinout in 1966.

The first move I remember going to as an alleged "grown-up" was Catch-22 in 1970.