A few which I have enjoyed, the first one from a covers band
www.youtube.com/watch?v=gsFC51W0PX8
Perpetuum Jazzile (If you've not seen this don't give up on it, poss a minute before you might get what's happening)
www.youtube.com/watch?v=x1NvTwNTR5o
OK Go -'nuff said
www.youtube.com/watch?v=qybUFnY7Y8w
The interval act (audience at the end gets me every time)
www.youtube.com/watch?v=w0v_pu6miJ8
Nils Lofgren - "close enough for rock'n'roll"
www.youtube.com/watch?v=iBq7XRa6uZM