For the third - a selection of "Whospy" behind the scenes pics. I loved these when they were a daily feature on the BBC Who site in the days of the first new season. I wish it would be a regular feature again.
And the Fourth - a companion (or as some might have it, "side-chick" quiz.) I was doing fine until I got to a question with a sound component and bagged, because I had the sound off and didn't want to put it back on. Perhaps later.