Pinging off the walls? We have tried DANCE and TAE KWON DO with our ds...we had to look around a bit but found classes where the kids were constantly being engaged on a nearly one on one level which helped tremendously with wandering attention span and getting the energy out. These have also been recommended as great brain building types of exercise - the child has to learn a complex series of moves in addition to getting a great work out! Further, especially with with tkd, even at the early levels, there is a real sense of forward progress and achieving something.
