WTF. Is that how harp playing can affect people? Wasn't even bending over to the beat as far as I could see. Words, fail me. I enjoyed it though and we won't forget him in a hurry.
During parts of the video he looks like one of those dipping birds that you set on your desk. During other parts he looks like he is looking for his contact lens. During other parts he looks like he's vomiting.
I didn't see anything great about his playing, but what he does have is stage presence, which is sadly lacking in many bands. There are many examples of ordinary singing or instrument playing accompanied by some unusual movement which can have a positive impact on the overall performance.