AMA Request: the cast of This Old House

Any one of them would be cool

1. All time favorite project?
2. What did you do before This Old House?
3. Favorite Ask This Old House project?
4. Coolest thing you've learned in the experience of doing the series (e.g. working with new materials or techniques, etc.)
5. What are some of logistical concerns of starting and completing a project that we the viewers don't see in the show?