Agreed. My entire life I heard how incredible the Grand Canyon was. I heard it so much that I was afraid the over-hype would lead to an underwhelming experience when I finally visited it in my 40's. It's one of those rare places that no matter how high your expectations are, they are exceeded when you see it for the first time.

EDIT: Getting up early and making your way to the rim when it's still dark to watch the sunrise is an absolute must.