"Stuck" is probably an easy one for them to pull off in such a setting. Although it would have been cool if that round, UV mic came down from the rafters.
+1. They've got plenty of better songs to pull out in an acoustic set, starting from the obvious One which Bono himself said is a versatile song which can be (easily) played at almost any ocassion... And man, if you're going to talk about Africa after the song you play, don't be so cynical to play Stuck In A Moment...
.. kidding