I have just watched the most recent programme in this series - it features Judi Dench.
Judi Dench's first major role at the Old Vic was as Ophelia. She learns that a direct ancestor on her mother's side came from Denmark ...
I'm not going to spoil this story for anyone who has not seen the programme. I find Who Do You Think You Are usually quite interesting, and sometimes fascinating. But this time it was spellbinding.