I have the iP4, and my buddy has the SII. The iPhone walks all over the samsung when it comes to battery life.
I use the old Galaxy S and One problem with that phone is that its stand by battery life seems decent, especially if you manage the power issue carefully, but as soon as you read bright stuff on your display the battery goes down fast. So it's hard to tell the whole story just from the static battery life testing. But yes, iPhone 4 does last a few hours longer than the Galaxy S when it comes to surfing the web.
While movie directors and electronics designers are a strange comparison and a little off topic, I would have have to agree with you taste in directors. Nolan is my favorite living director.
I don't know if he's my favorite and I am not that big on his Batman as others, but I really loved Memento and, to a lesser extent, Inception. In any case, he's definitely a director whose movies I'd watch just because he's directing.