Skyward Sword Epic Trailer- I was anticipating this game so much, i couldnt even play other games since it simply wouldnt satisfy me. This trailer shows so much variety and the brilliance i would encounter in the main game. Breath of The Wild has a fantastic trailer, but so far it was not shown one that reaches these highs for me.
The Last Story Release trailer- One of my favorite rpgs of all time, my favorite from Sakaguchi, the music, the story, the themes and cast are very well presented in this trailer
Xenoblade Chronicles World trailer- I believe its a fan made trailer, but really well done and it shows not just story but also world locations of this amazing game
Ironically my top 3 trailers belong to the Wii x honorable mentions to MGSV red band trailer and Breath of the Wild.