I've been to Disney World a number of times. At this point you'd think there was nothing left for me to experience. After more than a dozen times you'd think I would have seen it all. WRONG!!
The Main Street Philharmonic. If you have not seen this fun show you need to. It's a nice offbeat show that most people wouldn't even stop to check out (as seen in the video). However, if you stop and see the Main Street Philharmonic you will not be disappointed. It's a fun, goofy show that won't disappoint.
You can see the video here.