ABC For Kids has lots of colouring in pages from your child's favourite TV show.
There are heaps of free colouring-in pages on this website, suitable for all ages. They are arranged under different category headings. Some examples of categories include; special needs, fairy tales, space aliens, animals, countries, alphabet, weather, table manners... and lots more!
Kidspot has 100+ colouring in pages for kids of all ages. A slide show of the pages in each category makes it easy to find your favourite pages to colour.
This site has tons of colouring in pages arranged from A to Z. A few examples include Cinderella, Superman, Bob the Builder, Alice in Wonderland, Ben 10, Thomas and Tinker bell.