Anything that made you realise how great life is or appreciate or think abut life in general..

a serbian film
human centipede 2
aftermath
murder set pieces
mordum
real tear jerkers

Saving Private Ryan
The Color Purple
A Beautiful Mind
War Horse

Old Yeller!!

Some weird choices here, but they really made me think about life:
Star trek, the Motion Picture - a brilliant reflexion about the human condition and what makes us human.
Fallen Angels (Hong Kong, by Wong Kar-wai) - It's highly stylistic, but truly reflects the urban isolation present in today's cities.
Mephisto (german movie) - reflexion on the corrupting nature of power
Conan the Barbarian (1982) - it sounds silly, but i find in it profound philosophical undertones
Leaving Las Vegas - i think this one speaks for itself
There are probably more, but none comes to mind.

The Man From Nowhere[Eng Dub][2010]....!

Forrest Gump

Intouchables!

Notebook, My sister's keeper and so so many others like these...(romantic, and realistic)

Sharshank? What was that about? J/K mate

Seven Pounds with Will Smith I saw it yesterday