I came across this video on Facebook yesterday - Comic Relief with the cast of Call the Midwife & a cameo from Dr Who, created to raise money for Red Nose Day in the UK. Worth watching if you're a fan.
There's also this one about using prosthetic babies - I love this behind the scenes sort of stuff: http://www.youtube.com/watch?v=GNe6xt3O0uI
I also discovered there's a soundtrack CD & an official companion book. I'm tempted by the CD. I've always been into soundtracks, and 50s & 60s albums are great to clean to.
And it turns out that the book is in the library. I'll put a hold on it once the series is finished - I'd rather not be spoiled if I can help it. So perhaps I'd better stop poking around the internet...