Get Youtube ID

http://stackoverflow.com/questions/3452546/javascript-regex-how-to-get-youtube-video-id-from-url
http://stackoverflow.com/questions/10591547/how-to-get-youtube-video-id-from-url

https://developers.google.com/youtube/2.0/developers_guide_protocol_video_entries
http://www.dzone.com/snippets/extract-youtube-video-id-url
http://snipplr.com/view/69877/