I agree that alien are probably very diferent from us. I mean, life have been found even in the deepest places of the oceans were life was thought impossible, thus life can be present in conditions that seem very harsh to us.
I wouldn't be surprised if it turns out that every planet out there have some form of life. Though intelligent life seems to be a diferent ball game.
So there is probably very little chance that aliens are going to look like the Naboo...
