Apple plans to build a circular “spaceship” building in hometown Cupertino — and be the best office building in the world, CEO Steve Jobs said. The ailing Jobs, formally on leave from the company, made his second public appearance in two days late on Tuesday to show off plans to the Cupertino city council. Apple has grown “like a weed” Jobs said, and needs a place to put roughly 12,000 people. The massive new structure would be in addition to the main campus at 1 Infinite Loop.