I believe there's definately many things that humans aren't aware of, or able to comprehend.
Of course with science as the basis of allowing us to understand and predict the reality we live in, anything which science can't or is yet to then it's hard to beileve it's 'real'.
Again, in my opinion, we've yet to find the limits of the power of the human mind. We spend our lifetimes learning about everything else apart from ourselves.
There's people who can regulate their body tempertaure, slow down their heart beat, recall details to a huge degree (referring back to the guy who flew over Rome then drew it in incredible detail). These people have trained their body (or have a brain disorder in the 'Human Camera' example) to accomplish such feats few other humans can.
If you took the rest of the population who weren't aware that it was possible and asked them if they thought it was they'd say no, and they probably never would discover it was.
I'm not saying it's possible to become Dr.Xavier from Xmen and throw objects across the room using only the power of the mind, but only that we're far from reaching the minds potential power, and to do so takes patience and practice, which only a few people take time to do.
I realise i'm rambling but I think it's a pity many people don't have an open mind to such things, and instantly pass them off as crazy talk because they've been taught by science that it's not theoretically possible, I suppose us humans are too stubborn to understand that even science may have it's limitations.
Disclaimer - I am by no means religious, I do not perform any 'dark arts' and believe in evolution as opposed to creationism, and I'm not crazy, as far as I'm aware.
Edit:
http://www.ted.com/talks/view/id/229