We're just about to start shipping out rev2 of Pepper which has some improvements on the original design including an additional 2 buttons (4 in total) and amplified audio outputs (-5v to +5V) which greatly improves the signal to noise ratio.
I'm in the process of putting together a blog post for this and I'm collating videos of Pepper in action. If anyone has anything to share which might have slipped under the radar then please post here.
Cheers,