I came across this on You Tube - how I got there I can't remember. It's around seven minutes of fun - and should be taken as nothing more seriously than that:

http://www.youtube.com/watch?v=9WBqHdI5Bdw

It had me and the wife smiling anyway - we thought it very clever

Glad you posted that because I found this last week and was a bit unsure whether to post it. If you like South Park, you'll love it.....

https://www.youtube.com/watch?v=U29P3OBDQ_M

I'm not a huge South Park fan, but that was good - and well made

It seems to be more like a doctor who musical and miming David Tennant's voice than a parody in my opinion. I like parodies where jokes are made about the original work.

Eh, didn't really like that one.
This one, however, is pretty funny: https://www.youtube.com/watch?v=hCnZZ-_s1jQ

Saw that one three weeks ago. Was stunned at how good this actually was. River Song was funny in this. I really like how the Doctor and Rory look. That made me laugh!

Yep I liked this too. They have actually done some great parodies of the Twilight movies