There is no general supremacy to be had, and nothing real to measure 'perfection' against. Ultimate completely misses the mark in terms of life forms.
When it comes down to it, life is chiefly just a convolution of how the sun's light reflects off of the earth, save for some interesting exceptions who fall in the minority. Even those are driven by other equally mundane phenomena, like the rusting of iron.
When I see the night sky, I'm given to thinking that there are likely other slimy patches out there somewhere in that whole wide everything. Even if that slime stands up, like it did here, it's still just plain old slime.
Our intelligence is merely self proclaimed. In spite of all our moving mass and energy around in ways we say are clever we're nothing but plain old organisms, through and through. To use a witless pun, it's inalienable.
There's no reason aside from whim to say a human is more or less metaphysically significant than the nonhuman goop in it's gut that supports it's life or the tree it's shading itself under and trading breath with. It's arbitrary to say so.
Given the aforementioned lack of evidence, it truly might be that this is the one and only slimy film out there, and I'd admit my surprise at that revelation.
On the other hand, what we mean when we say intelligence may very well have no meaning whatsoever to whatever we would find out there.
It would be rad to meet aliens though :)
RE: UFO's anyone?