Apache Virtual Hosting Black Magic

I’ve configured Apache for virtual hosting on more sites than I can count, but I’ve always just kind of stumbled through until now. What’s changed? The Apache 2.2 documentation is worlds better than the old 1.3 docs (even though the old docs rank highest in Google). So here they are: name-based virtual hosts, plus virtual host configuration examples (including an example mixed name and IP virtual hosting, which is what I needed), and some tips on dynamically configured mass virtual hosting.