"The anticipation and excitement about some impending awesomeness can be so stimulating for your body that it simply brings you back to this waking reality."
That is interesting but I have actually had it go the other way. I wanted out of the dream and I "woke up" only to realize that I was in another dream. This could happen several times before I actually woke up.
I can't say that I ever picked something that I wanted to do beforehand but I have picked some things out during the dream. I remember once I picked up a rock and threw it and I thought that it should explode and sure enough it went off like a hand grenade lol.
Hehe, ye the multiple bottom dream maze ;)
I always wake up when I get too excited - in fear dreams it helps JUST at the right time, in awesome dreams it always cuts it all short.
I love the instant materializations possible in a dream world. That said, I find it likely that even this place - our waking state - is not baseline. Just another layer that seems more convincing and permanent.
But: what do I know?! :P