Just caught the entire show on HBO. (This is the best link I could find on youtube.)
U2 was supposed to play Paris when the attacks occurred. As you all know, there was a slaughter at the Bataclan Theatre in Paris where the Eagles of Death Metal were playing. One of their managers was killed and I can only imagine the horror that is seared into everyone's memory that was in that theatre.
Anyway, I'm watching the U2 special out on HBO and the show was amazing and during the encore, U2 brought out the Eagles of Death Metal for 2 songs and in fact, let them close the show. Very classy move on the part of U2.
If you're a fan and haven't seen it, I recommend you take a look.