Favorite term for the home office?

One of the best things about doing communication seminars for a living is hearing all the cool terms and phrases people have for stuff. The other day in San Francisco, someone called his intranet a 'dead zone.' I'd never heard that before.

And I just heard a cool new term for what people in the field branches call the corporate office. I was already familiar with 'the ivory tower' . . . but this person had a better one.

She was asking a question about how to get people from the field to care about overall corporate news, and she said:

'Our problem is that people in the branches don't like the people in the mother ship, and don't really care what goes on there!'

Excellent!! Mother Ship!! Anyone else got any other terms for the corporate office?