Leanne Cooper is one of my new favorite WikiTreers. I love this video she did with Mags and Emma over the weekend:
It's a 20-minute introduction to WikiTree. She's given the presentation a few times to local genealogical societies and it shows. It's very thoughtfully put together.
It makes me proud when I'm reminded that there are many members of our community who understand WikiTree as well as I do, and in some cases, can explain it even better.