1) Man on Wire
This wonderful documentary was about a man named Philippe Petit who hung a tight rope between the Twin towers and walked across. It almost plays out like a heist.
2) The Walk
This is the movie version of Man on Wire starring my favorite actor, Joseph Gordon-Levitt. Sure, it's not the documentary but it was a good film and managed to use 3D filming to its advantage.
"This floor better shine like the top of the Chrysler building!"