Interfaith Group

has given rise to at least two intelligent human species (sapiens and neanderthalensis) as well as intelligent non-humans (cetaceans, elephants), I'd say the odds are decidedly in favor of intelligent life on other worlds.

I doubt that proof of intelligent alien life would turn a single pagan hair, and I suspect it would be equally happily received by proponents of Process Theology. For more conventional Judeo-Christians, someone, somewhere, would be bound to point out that "the heavens declare the glory of God, and the firmament showth his handiwork."