Some episodes are considered classics. Others are loathed even by Eric Kripke himself.

The story of the Winchester brothers over ’s 15-year run has delivered horror-inspired scares, a plethora of meta-jokes and, of course, a fair amount of emotional rollercoaster. But with so many episodes, the quality of the writing couldn't always be consistent: even today, fans argue about which episodes are better or worse, how much the quality dropped after original creator Eric Kripke left, and at what point the remaining writers took a wrong turn.

Speaking of Kripke, he understood Supernatural episodes couldn't be successful all the time.

'Sometimes, you try things that just don't work at all, and because of our time and budget, you don't have the time to go back and re-do them, you have no choice but to air them in their deformed state, and so you have to live with millions of people watching your mistakes,' he told TV Guide back in 2008.

Even Eric Kripke has episodes that he personally doesn't like, and oddly enough, many of the ones listed are universally loathed. Let's take a look at which ones the Supernatural creator himself considers a waste of time.

This one is by no means considered outright awful, but only as a stand-alone story.

In the context of the plot's continuity, however, it becomes quite clear why the showrunner disliked the episode so much.

The concept revolves around the ghost of 19th century serial killer H.H. Holmes and alludes to pervasive patriarchal brutality against women (ectoplasm as semen is definitely a bold statement), but this intriguing underpinning is undermined by the very shallow romantic arc between Dean and Jo, which neither reveals the essence of their dynamic nor provides anything beyond fan service.

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