If you were going to WDW and only had time for one attraction, what would you choose to do??
I would have never said this before this trip but - Fantasmic. I won't pick a ride because they are too short. Watching my kids at the Jedi Training was awesome as well. We really enjoyed DHS this trip. Mickey's Philharmagic was a choice as well.
But I think I would have to go with Fantasmic for the length of the show, and it's overall "Disneyness". We really loved it.