Well, now we go from the Towering Inferno of Suck to the Crowning Moment of Awesome. I think that's an improvement.
This is actually by FAR the hardest of the questions so far. If there's something anime historically does well, it's Epic Scale Awesome. I have so very many to choose from. Tenchi suddenly appearing aboard the Souja after being thought dead and then kicking Kagato's ASS in a single devastating stroke that doesn't just sever Kagato in half -- it cuts the world-destroying STARSHIP in half. Dragon Saint Shiryu, beaten almost to death, about to be tossed into the pit of Hades forever, sensing his beloved Shinrei thrown apparently to her death by Deathmask Cancer's psychic attack and suddenly awakening to the true power of the Dragon in a storm of rage that has the Gold Saint COWERING in TERROR. Dragonball Z, perhaps the DEFINITION of epic, with dozens of such moments to choose from -- possibly the greatest being Son Gohan going Super-Saiyajin Stage 2 when Cell finally pushes him that One Step Too Far. Terry Bogard turning to face Ares, God of War, with a single tear of blood running down his face after Suliya dies in front of him -- the second woman in his life to do so. Dark Schneider, the living AVATAR of epic, going head-to-head with his beloved who's been driven to kill him by his enemies... and then RIPPING OUT HIS OWN HEART to save her.
But I think I have to give the grand prize of Epic to:
YuuYuu Hakusho: The Poltergeist Report Movie
In the grand finale, Yusuke and his friends are facing down Yakumo, who has reclaimed his Netherworld Sphere and seems to outclass them in every way, beating Yusuke, Kuwabera, Hiei, and Kurama easily. They manage to separate him from the Sphere but even that isn't enough, so Yusuke does the only thing he can think of doing: grabbing the sphere (though that is supposed to be lethal to anyone other than Yakumo who tries) and attempting to convert the Netherworld energy into the Spirit energy that he and his friends use.
At first it seems he's failed, and Yakumo moves toward the column of smoke to reclaim the Sphere... but then it clears, showing Yusuke still holding the Sphere, almost screaming in agony but unwilling to release it. And then the sickly pink-purple begins to spark the blue of Spirit Energy. But Yusuke begins to collapse, his will strong but his body simply unable to channel that much power... and he's caught by Kuwabera. "You've got yourself too much energy there!" And the other two are suddenly at his side. "The wills of all four... are now one."
That moment -- to what may be the single greatest Crowning MUSIC of Awesome ever -- and the quick and devastating battle that follows are the very embodiment of EPIC.
Day 1 - Very first anime:Saint Seiya
Day 2 - Favourite TV series: : The Vision of Escaflowne
Day 3 - Your anime crush: Belldandy, from Ah! Megamisama/Ah/Oh My Goddess! and Shun from Saint Seiya
Day 4 - Favourite Film: Tonari no Totoro/ My Neighbor Totoro
Day 5 - Anime character you feel you are most like (or wish you were): Shikamaru from Naruto Shippuden
Day 6 - Most annoying anime character: Mihoshi, Tenchi Muyo!
Day 7 - Character you’d most like to slap: Sasuke, Naruto Shippuden
Day 8 - Most epic scene ever: End battle of YuuYuu Hakusho: The Poltergeist Report Movie
Day 9 - Saddest anime scene
Day 10 - Favorite slice of life anime
Day 11 - Favorite mech series
Day 12 - Best instalment of a franchise you don’t like
Day 13 - Worst instalment of a franchise you do like.
Day 14 - Current (or most recent) anime wallpaper
Day 15 - A reality check for a genre you like
Day 16 - An anime classic that simply doesn’t work for you.
Day 17 - Best Background Music
Day 18 - Best Five-team (?)
Day 19 - Change you’d like to make to any one anime
Day 20 - Most ambiguous anime character
Day 21 – Favourite OAV Series
Day 22 - Animation studio you'd most like to slap.
Day 23 - Anime you think had the best, or most intriguing art
Day 24 - Favorite anime hero or heroine
Day 25 - Best anime villain
Day 26 - Your favorite harem anime
Day 27 - Favorite anime opening theme song
Day 28 - Favorite anime companion/summoned creature
Day 29 - Best Anime Music Video
Day 30 - Favorite anime ending theme