In no particular order:

-Star Wars

-Ghostbusters

-Butch Cassidy and the Sundance Kid

-Terminator 2: Judgment Day

-Jurassic Park

-Se7en

-The Silence of the Lambs

-Back to the Future

-The Nightmare Before Christmas

-Alien

-Kingdom of Heaven (194 Minute Director's Cut)

-Superman: The Movie

-Jaws

-RoboCop

-Raiders of the Lost Ark

-Tombstone

-Unbreakable

-28 Days Later

This list has all the movies that I can sit down to watch and enjoy immediately. My love for them has never dulled due to repeated viewing; they are fresh experiences every time. Also, these movies are all very inspiring creatively and get my engines going in that respect. These are the films I can't wait to share with my kids (in the case of some, when they're old enough!)