What I liked: Carl Rove (and wolves howling whenever Stan mentioned his name), Steve being pregnant and passing the alien egg onto the girl he liked, Stan pretending to be possessed, the ending of the episode, amongst other things.
This was a delight. A lot of good, funny gags. The plot was not the strongest thing in the episode, but there were a lot of good jokes that saved it. One of the funniest episodes for me, Roger was pretty hilarious throughout (like him yelling at Steve when he runs out of the house), and as a result my final grade is a B+/A-. Great episode.