Disney
There are very few episodes available on the website and they're rarely new, but they are excellent quality and my kids like to watch them anyway.
The air date fetching is flaky because it comes from Wikia and the formatting is not always the same. I have another method of getting air dates from thetvdb.com, but it requires a free api key.
Add as a Web Resource
Sample URLs:
http://disneychannel.disney.com/austin-and-ally/video
http://disneychannel.disney.com/jessie/video
http://disneychannel.disney.com/gravity-falls/video
12Sept2013 V2 - Won't die if Wikia page doesn't exist
30Apr2014 V3 - Disney switch to a flash based player with encrypted_hls