I recall reading a sci-fi story once where humans were visiting some alien planet and came across some of the inhabitants talking about this miracle worker they'd met. I think you were supposed to infer that this was, in fact, Jesus Christ, sent to the inhabitants of this particular planet in a form they could identify with.

It was a while ago, though, and I can't remember anything else about it, just that it kinda-sorta made sense if you accepted the Christian viewpoint of "intelligent beings needing to be saved." Obviously, aliens wouldn't really be able to identify with a human Jesus, so why wouldn't an all-powerful trinitarian deity send his son to alien worlds in alien form? (Note that I said "if" you accepted the Christian worldview...) Has anybody else heard of that story?