Check out 1:15 into this video.

One of the best ads for Oculus I can imagine.

OMG!  That would totally be me, I'm afraid of heights.

But in your mind you know that it's not real, so doesn't that help?

Depends on how much weight my brain gives my eyes ;)

Can you outthink your eyes?

I don't think so, I think vision is probably the biggest sense for me.

Ah, then these virtual reality simulations might not be good for you.