We bought Widdle and Puke Sesame Street Old School for Christmas. Little did we know that it wasn't suitable for children. It seems obvious now, I mean, Sesame Street is all about the alphabet and the numbers and they've clearly changed beyond all recognition since 1969.
Or maybe it's the fact that Oscar the Grouch STARTS OUT ORANGE. That freaked me the hell out so god only knows what it would do to today's pre-school child.