HI Guys,
I also have the Sing to Learn, and my 3 year old son quite enjoys it though after a while he find the animations rather boring. He loves Taoshu esp the English DVDs but now they also have the Chinese DVDs that teach Chinese Culture/history/traditional arts/food etc.
It's quite a great series (5 in total I think) worth a look? I think you can get them at this site.
www.learnchinesebooks.com