I just got done with Heavy Rain, probably the only game that made me really think of what I do in the game. The only game that made me really worry about my character. The only game that made me feel like I am actually going through the story on my own... I'd recommend buying ps3 just for this game alone...

Many many times you have to do decisions like this in game...
[youtube]http://www.youtube.com/watch?v=o1eGF2_MWQ8[/youtube]

Or watch these two videos, two people made two different decisions:
[youtube]http://www.youtube.com/watch?v=MCPASbMfOXY[/youtube]
VS
[youtube]http://www.youtube.com/watch?v=YRlgiNrXgkU[/youtube]