One thing that occasionally blows my mind is a fairly simple train of what I hope is logical thinking. It goes like this:
I am a small piece of the Universe.
I am aware of myself, and aware of the Universe.
Therefore, the Universe is aware of me, and of its self.
I don't expect to get back on the Christianity train any time soon, but the experience of having this epiphany "feels" more like it should be worded:
"I think, therefore ... (God!?)"
There are other odd tracks that tend to flow. Such as whether the oceans or Earth should be counted as "alive" even though the rocks and salt don't reproduce themselves. If you take a fish out of the ocean, it tends to die. So is the fish not a part of the ocean? What about the fact that if you took a given scoop of ocean water up and looked at in under a microscope, it would probably have a ton of single celled organisms in it?
Oh right... they call that an "ecosystem."
The whole thing is a mental parlor trick. I can't do anything with these thoughts.
"Ooh, it's amazing! But wait ... so what?"