Belgium: 20 Years Belgian Comics Museum (2009)

Germany: Sandmännchen (2009)

First Day Sheet:

"Erinnerungsblatt":

USA: TV Early Memories (2009)

I guess many of these were also watched by children, but the only one of them that I knew as I child is Lassie.

Germany: Birth Bicentenary of Heinrich Hoffmann (2009)

Czech Republic: Spejbl and Hurvínek (2009)

USA: The Simpsons (2009)

On a matching Card:

Used on a Card:

Used on Covers:

[Incomplete] Finland: Moomins (2009)

I collect Moomin stamps used only.

On a matching card:

Used on Cards:

France: Looney Tunes (2009)

[Appendix] Latvia: The Miracle of the Forest (2009)

Germany: Nils Holgersson (2008)

Belgium: Smurfs - Booklet (2008)

Belgium: Smurf Party (2008)

On a matching Card:

[Appendix] Latvia: Seven Vicious Brothers (2008)

USA: The Art of Disney - Imagination (2008)

Used on a Cover:

Belgium: Mickey Mouse (2008)

Guernsey: Mr Men and Little Miss (2008)

New Zealand: Narnia (2008)

Used on a Cover:

Switzerland: The Little Polar Bear (2008)

FDC:

Sweden: Birth Centenary of Astrid Lindgren (2007)

It is a joint issue with Germany.

With Special Postmark from the German "Erinnerungsblatt":

FDC with the stamps from Germany and Sweden:

Germany: Birth Centenary of Astrid Lindgren (2007)

It is a joint issue with Sweden.

"Erinnerungsblatt" (includes also the Swedish sheet):