What about subject knowledge?

In this video Richard explores the importance of subject knowledge. You may well know that you want to teach children but what? Think about your own experience of subjects both at school and since then if you have already gone on to further study or work. What subjects would you most like to teach and why do you think these to be important?

If you are planning on teaching a range of subjects do you have a specialist area? Are there aspects of subject knowledge that you still think you may need to develop?