I wouldn't say there were any movies that 'shook' or 'changed my life', but there've certainly been some that have made me stop and go "Huh. That's pretty cool."

Science-Fiction, presented in a surprisingly believable way, along with
top of the line absolutely breath-taking special effects (the scene where the T-Rex looks into the Jeep *still* gives me goosebumps) and a pretty cool cast (Goldblum, Neil). Jurassic Park was one of three movies that I
destroyed my parents' VHS player playing over and over and over again.
It didn't help that, at the time, I was
dead certain I'd follow the path of the archaeologist, and spend all my life digging for old dead things in uncomfortably hot environments.

One of my passions has always been food, (cooking, working with it, eating it, you name it), and this movie really struck a chord with me. I don't have a lot to say about it, but man. I really liked it.

'nuff said, eh

One of the only 'horror' films I have ever been able to stomach. I *really* like The Thing, because as it goes on, you realize it's much, much less about the evil alien shapeshifter, and more about the relationships, fear, and power struggles between the guys in the facility.

This one's a classic - and it's one of my all time favorite movies. Errol Flynn plays a doctor who, in giving aid to someone he ""shouldn't"" have, ends up sold into slavery, and ends up becoming a pirate captain, winning the heart of the
gorgeous Olivia De Havilland. It was, in fact, this very movie that cemented Flynn in the 'debonair swashbuckler' image he maintained for his career.
He's got a major sense of class, and his wit really shines.

Much like The Thing, The Shining is one of the only horror movies I actually actively like. We're all familiar with the 'HERE'S JOHNNY' scene, so I won't waste words over it.
The Shining, much like The Thing, isn't about the big supernatural hotel with ghosts running around - it's about Jack Torrance, an abusive (he broke is son's arm on purpose one night), alcoholic writer who had JUST sobered up (or was mid-process, I forget), and the way the hotel and perhaps the isolation wreaks havoc with his mind, leading him to madness, as he talks with Lloyd, the ghostly bartender.
It's just a brilliant story.

Also brilliant, the movie that essentially invented The Macguffin.