Joy Division made some seriously moody punk rock in their day. Sure, most people refer to them as "post punk," implying that "they came after punk," but I think it's more accurate to view them as a band that took punk rock and carried it a level deeper.
In short, Joy Division made music that boggles my heart every time I listen to it.
What music like this taught me about great media is that you have to have a panoramic approach to the content you create; that it's possible to dig into an array of emotions, aesthetics, and ideas, and combine them to make something powerful, challenging, and unexpected.
So when I'm feeling like the media I'm producing is starting to get bland or shallow, I throw some Joy Division on my turn table, and start combining unlikely ideas, emotions, and aesthetics together, and let them bounce off each other until something compelling is created.
I think what moves me about this particular band is that they come off as honest. It's what makes me love them so much, even if there are times when it seems they were still figuring out how to play their instruments when they went in the studio.
What this shows is that great media is honest and goes into unexplored territory. Like taking punk rock and making it find melody, we can take old aesthetics and make them new by injecting them with new, diverse, aesthetics.