It's irritating when people don't want to watch a movie because the premise sounds stupid. You can make any great movie sound ridiculous by over simplifying its premise. "Oh, The King's Speech is about some guy with a stutter who has to give a speech. Black Swan is about some girl who wants to be the leading role in a ballet." Just give it a chance, amirite?

I'm not saying this is always true, but I've found that a lot of movies with basic/simple plots are actually good because it really gives the actors a chance to carry the bulk of the movie instead of relying on special effects and gunfire to make it a success.

Avatar is about a human trying to team up with aliens to save their planet by becoming one of them and learning their ways.

Fern Gully is about a human trying to team up with fairies to save their forest by shrinking down to their size and learning their ways.

Hang on.........

Titanic is about two people on a boat, but without TPain.

The Lion, the Witch and the Wardrobe is about....oh wait:p

The Social Network is about rich white college boys who make websites.

Frost/Nixon is about an interview that took place after Watergate.

Breakfast Club is about a bunch of highschoolers who are in detention.

It can work the other way, too: Transported to a surreal landscape, a young girl kills the first woman she meets and then teams up with three complete strangers to kill again. The Wizard of Oz

Some guy? Try King of England in WWII XP
But yeah, I understand what you mean :P