Some might look human, some might not - all we can do is speculate. It is illogical to suggest otherwise.
I understand your view is a common view held by many people exemplified by Steven Gould who has said, "that if the tape of evolution were replayed a million times, a species like ours would not necessarily evolve."
I agree with Simon Conway Morris, that "the outcomes of evolution are remarkably predictable." My stance here in agreement with Conway Morris is that evolutionary end points are finite not at all infinite. That convergent evolution shows the best designs are arrived at in evolution over and over.
Furthermore, if we are strictly talking about an Alien technological civilization then there have to be some real constraints boilogically speaking in that this species must biologically be able to preform most of the same physical tasks we are biologically able to do that allow us to be a technological civilization. While an Alien planet might be somewhat different than Earth, the basic 'tasks' both 'we' and an Alien technological civilization must be able to preform are going to be very similar.
If the physical tasks a species who acheives technological civilization are basicially very similar to what we are able to do then I agrue that it only stands to reason and logic that such a species would be quite similar to us. Here I'd point out again that I agree with Conway Morris that evolutionary end points are not infinite as many people commonly assume.