Don't forget the materials made for the babies and kids to learn the language of the land that they are living in. They are much more cheaper, than DVDs especially made to learn a foreign language and in addtion they often have different language settings (english, german, french, italian, spanish) because it's cheaper for the DVD-makers.
For example german: http://forum.brillkids.com/teaching-your-child-signing-speaking-foreign-languages/german-resources/msg75143/?topicseen#new
In amazon.de you'll find so many educative things, especially DVDs, when you cant speak the language.
For english it's esay as well: amazon.com or amazon.co.uk
There are so many nice DVDs and sing-along-CDs
Another good resourece is the bbc-shop. BBC stands for high quality.
http://www.bbcshop.com/childrens/icat/childrens/
For french it is, naturally, amazon.fr
But where can I find spanish, italian and dutch DVDs?
What are popular and nice series in these countries?
(For adult learning: Watching kids DVDs is such a fun way to learn new languages. The language is very simple and you can see and hear the word when using subtitles and you see the pictures.)