THIS SEASON YOU GUYS. THIS SEASON. ♥
Seriously, from the premiere you knew this season was gonna rock it hardcore. It brought something new and different to the mythological arc of the show, upped the stakes with giving Dean Winchester his own storyline that was separate from his brother's but still both were intertwined in this bigger picture, and gave us new and fascinating characters to play around with (Castiel obviously, Uriel, Zachariah, Chuck, Pamela, etc). To me, it was just so well-constructed and developed in plotting out how to handle the entire season, complete with Kripke keeping the angels reveal under wraps until the premiere had aired, it was new and exciting and I was utterly thrilled by it. Surely it was darker and had more angst, and had the Winchesters at odds end and pitted against each other, but that's something that was a necessity for character growth, since their co-dependency is rather unhealthy anyway and they needed some space sooner or later. There was also much discussion and exploration of angels and Heaven and their involvement, the developments of characters like Castiel and their empathy and compassion for humanity and the roles angels in Heaven are playing at and the complexity of their species as a whole.
I consider the fourth season a great blessing because it had everything we needed in completing the story of what we've been learning over the last three seasons. The beginnings of what needs to happen to wrap everything up, so to speak. It was a serious but fascinating season, even the episode titles were bookends of each other ("Lazarus Rising" and "Lucifer Rising", and everything else in between was of the religious theme that brought me much giddiness, not gonna lie) Season four was also when I started to fully engage myself into the show and the fandom itself because of this magnificent shift. Had the show not gone in this direction, I don't know how long I would have stayed with it to be honest with you.
Did I also mention the brilliance of Castiel, our favorite nerdy angel of the Lord? I mean come on, I cannot imagine the show without him at this point. This season brought the amazingness of him and angelical lore, and the incredible friendship and profound bond between Dean and Castiel and their journeys together, therefore it forever has my heart. ♥ ♥ ♥
TL;DR VERSION: I LOVE SEASON FOUR BECAUSE IT ROCKED HARDCORE TO THE MAX, IT BROUGHT EVERYTHING I LOVE ABOUT A SHOW LIKE THIS TOGETHER IN ONE SEASON. MYSTERY, SUSPENSE, CHARACTER GROWTH AND INTRIGUING ARCS AND THE DARK COMPLEXITY OF CERTAIN SITUATIONS THAT WERE HAPPENING THAT ACTUALLY MADE SENSE WHEN LOOKING AT THE BIGGER PICTURE. THAT IS HOW YOU DO A SEASONAL ARC, DAMMIT. LEARN FROM YOUR SUCCESSES SHOW. SO, YEAH. THERE YA GO.
Day 4 - Your least favorite season
This shouldn't come as a surprise to anyone, honestly. I have been displeased with this current season so far, hell even way before it premiered I had bad vibes about it since I hated the prospect of having a sixth season to begin with anyway.
Pinpointing the exact issue is rather difficult because it's a combination of many things, though I think at its core it is structurally disorganized. They have great themes and ideas like purgatory and the souls and the civil war in Heaven, but everything is just so scattered and all over the place, there's just no sense of direction whatsoever. There's far too many inconsistencies and characterization flaws and retconning and focusing on things that are irrelevant and aren't needed, that it gets to the point where it surpasses being ridiculous to just not really caring anymore, and that's disappointing. Even though the season isn't done yet and there's still some time to see if it'll redeem itself, it just is a huge letdown and disappointment altogether. I honestly believe that placing Sera Gamble in charge was a huge mistake. Making a sixth season in itself was a huge mistake, because they had something amazing going for them, something that could have ended last season, wrapped everything up in a nice little bow like they had originally wanted. But somewhere mid-S5 is where they lost that potential and started dragging their heels, and it's rather sad seeing it go down this path when it could have gone out with an apocalyptic bang.
Runner up: Season three. While it had its fun moments, it was just a filler season that didn't match up to the atmosphere of the show at all.
Rest of the 30 Days of Supernatural Challenge.