A Viking Yeti
Carnal Leviathan
They look pretty nice ('cept for the quality lost by the compression). I do have one question though: why do you say that there would be no evidence of an attack from a massive laser (I think that's what you said, but I'm not sure)? A huge laser would leave effects on the enviornment, and most certainly some inorganic objects... Sorry if I misinterpreted what you said.