The charming and animated Lucy Worsley on toilets through the ages. Fascinating! And a bit stomach churning.
You may have to watch this video in YouTube rather than here.
There is a great story on Dr. Worsley in the New Yorker (abstract). And there are many more travels through history with her on YouTube. The Diet of Henry VIII and The History of Toilet Paper are a couple of great examples.
I was blessed to have a history professor very like Dr. Worsley when I studied in England. Christine Mitchell, too, made history come alive!