I have a friend who has a child with similar learning problems and found the Wiggles to have the same effect with him. Josh would sit for hours watching if you let him and wore out many tapes.

They are of course an institution here in New Zealand with all my children being very much into the Wiggles. The big purple dinosaur has lost his appeal here and hasn't been on for a long time. My girls love Dora the Explorer. Thank goodness for Nickelodeon!!..lol