Billed as the "10 Best Hikes in the World" http://www.bootsnall.com/articles/09-02/10-best-hiking-trails-world.html this one makes my mouth water and my palms sweat!
I have done the Zion Narrows and it is spectacular. Am drooling over the Kalalau Trail on Kaui... GOD willing one of these days I hope to hike that one. The Inca Trail appeals to me as well. I'm certain all of them are outstanding.
Any one of these "whisper to your heart"?