^
I quite enjoyed this one. Sure, the actual plot was really easy to figure out, as soon as its laid out the two warring aliens want to know which of their DNA is present on the planet's ancient artifacts, it was very easy to figure out they both had a common ancestor, and once it's made clear that Blue Man is making those around him fall madly in love that becomes the obvious solution to why the aliens don't go to war.
But this episode definitely stands out in the humour area. Bortus getting ready to sing Celine Dion, and Yaphit explaining his family portrait being my two particular favourites, but really this episode had me laughing near constantly all throughout. I do like this show takes a more character oriented approach to things.