I can be pretty cynical about these types of stunts and what they supposedly represent about the human spirit (what's that saying? sometimes a cigar is just a cigar?) but this hooked me. And yes, 9/11 does make it much more poignant. The story is incredible, but the filmmaking is good, too. I was very tired when I saw it, so I nodded off a bit during some of the parts about the planning, even though it was quite fascianting in its own way, but once they got to the execution of the wire walk, I was thrilled. Only criticism: every time they showed the guy riding a unicycle, it made it a little harder for me to root for him, because unicycles are the dumbest things ever. I see people riding them around town as if they're actually a viable form of transportation...FOH.