I am really bored and fancy watching a really good, clever movie. By a clever movie i mean one which has many twists and turns, that keeps you guessing and then reveals all at the end. If you guys have any suggestions that are simular to that of:
inside man
fight club
lucky number sleven
phone booth
shawshank redemption
then please can you post here the name of the movie(s).

Se7en (seven obviously...) 10/10
Fantastic Mr. Fox 9/10 (it's more funny than clever, but it's a fox, so it's clever)
A beautiful mind 10/10

Can't come up with more atm...

Usual Suspects
Unthinkable
12 Monkeys

Just a few from the top of my head.

What about the films I mentioned. They don't get better than that!

Heres top ten of most "confusing" movies ppl voted
1. 'Vanilla Sky' (2001)
2. 'Mulholland Drive' (2001)
3. 'Donnie Darko' (2001)
4. 'The Matrix Revolutions' (2003)
5. 'Memento' (2000)
6. '12 Monkeys' (1995)
7. 'Eternal Sunshine of the Spotless Mind' (2004)
8. '2001: A Space Odyssey' (1968)
9. 'Revolver' (2005)
10. 'A Clockwork Orange' (1971)

I saw the following and they were great: 1, 3, 5, 6, 7, 9
Also: number 23

Another confusing movie is Babel.

And Greenie, what films did you mention? I'm also interested.

gremlins, ghostbusters and other movies. a joke list lol.

"A tale of two sisters" Asian horror with twists.
"Hole"
"The Bunker"

The trick is to see them without reading the back of the box.
But the best ones have already been mentioned.

Any of the Butterfly Effect movies are pretty good watching. All quite different - I enjoyed them equally.
'en.wikipedia.org/wiki/Moon_%28film%29:jiy4birf' is excellent imho.

Also, have you watched 'Misfits'? Not a film but watched recently and was impressed.

If you wanting something totally out-there oddball some interesting thinking 'films'...

On a pyschological/philosphical level 'en.wikipedia.org/wiki/Timothy_Treadwell:jiy4birf' is a film/documentary worth seeing about a strange man who lived with grizzly bears for some crazy amount of years (13!), before the bears ate him.

Some really interesting 'art' movies about the planet/life are breathtaking such as 'en.wikipedia.org/wiki/Baraka_%28film%29:jiy4birf' (must be on Blu-ray), and the third in a series of music/imagery 'films' called en.wikipedia.org/wiki/Naqoyqatsi:jiy4birf. The other two of the series are slightly older (look dated) but are still utterly amazing if you can stand them.

I'd agree with the other recommendations here - I'll add some more in a bit but my brain is fried.

"The Man from Earth" is a cool mindblower. Sadly it only went up in the states so you need to find it on the interwebs.