Is The Royale hated? I love that episode, I remember finding it pretty creepy as a kid
I'd probably say A Night In Sickbay, I found the way people went mental about it pretty laughable. I could hardly even remember it from the first run of the show, and I caught it again a couple of years ago on a rerun and was like "so what?"
I get why people don't like it; but I always have appreciated the portrait of Archer as a man who did love his dog. And seeing how and why he got Porthos made it [the episode] passable for me.