Coincidentally, our family did a hiking vacation in Yosemite a week after Alex Honnald did this climb. I knew nothing about climbing but our guided hike took us to the top of El Capitan. I was unable or unwilling to get within 100 yards of the edge - since at 101 yards there was a 3000 foot cliff.
That someone climbed this face without ropes (Ok, or with ropes) amazes me and I have been waiting for this movie since I heard about its production. It is a documentary and while you know the end before it starts, it is still one of the more suspenseful movies I've seen.