couple of sites that might be useful to you. http://planetgallifrey.blogspot.com/ and http://blogtorwho.blogspot.com/

planet gallifrey has a ton of vids if you poke around. all the doctor who confidential shows from past seasons and deleted scenes and outtakes and all manner of stuff like interviews and pictures and wotnot. the other blog site is a new one but whoever runs it sometimes manages to get hold of press images before anyone else has them.