I never heard the term porcelain before, but I liked this tidbit.
"In software development terminology, comparing low-level infrastructure to plumbing is hard to trace, but the use of “porcelain” to describe high-level packaging originated in the Git mailing list. To this day, Git uses the terms “plumbing” and “porcelain” to refer to low-level and high-level commands, respectively. "
Also, unrelated, the "Ruby people, strange people" video gave me a good chuckle.