My favorite Hidden Endings are Tyranny's Disase and MysticalDreamers.
I always felt bad that you had to destroy the Vanguard, for me it was a really cool thing, and I think that if the Vanguard existed the Fall of Guardia wouldn't have been that devastating, off course that's not true when I saw how it happen, but still... I liked the idea behind the Vanguard, and in this ending, Glenn's demise is so sad, "They... never came..." spoke his last breath.
In the Mystical Dreamers, I really like it because it kindda showed us how they end up in the Bend Of Time, and I really love all those well placed Cross references and foreshadowing, great work guys, I am sad it's all over actually...
I droped a single tear in the ending of CE, me eyes got all watery in the farewell scene, the song was just great there, but the tear didn't drop, it didn't drop when King Zeal spoke his last words either, for some odd reason, the moment that cracked my shell was when Lucca said "My mom expects that I will take over the orphanage some day" ant then Crono and Lucca share a laugh... that just, felt such a real moment for me, and knowing how it ended(the orphanage that it), it just triggered a rush of emotion in my head, also... for some reason, that's when it finally hit me, it's over, CE is over, and that's when the tear broke the integrity and fell.
I am really thankfull for the videos, but I have a mix of convergent feelings, I am happy to see the story, but now I am sad, because after seeing what CE could have been, I just crave the game so much. I will get over it, I know, but for now I am staring at the Darkness Beyond Time, waving my farewell to the Month That Could Have Been...