I believe the universe is a living organism not unlike any other living organism that we've encountered. Where our bodies are comprised of various different organs with different functions and each organ is comprised of various different living cells and each cell comprised of different inanimate objects and each inanimate object comprised of different inanimate objects so too is the universe.
In fact the Earth itself is much like a living organism, as one cell inside an organ in the universe. The waters of the Earth can be equated to the blood stream while the jet stream can be equated to the heart. I believe the universe is comprised of many different cells like the Earth, each with their own particular function in the body of the universe.
I believe we are likely to find a wide variety of 'life' in other areas of the universe and the life we find may very well be quite different than anything we've ever encountered before, much as if the appendix were to discover the pancreas. As far as intelligent life is concerned though, well I suppose it depends on what one means when they say intelligent, but in regards to finding something quite similar to human life I don't expect that we'd come across such a creature.
To say it is likely that other human like organisms exist in the universe simply because we exist in the universe is like saying that it's highly likely that the human body contains more than one brain simply because we know that it has at least one. As far as equating organs in the universe to organs in our body I believe that the human race makes up the brain of the universe, each human being is equated to a single neuron in the universe's brain.
Monotheism, there is only one universe. Like any other organism the universe must grow and learn. We are the universe becoming self aware.