100 Brilliant Ideas 2010 A bold concept perfectly in sync with the moment: It's what great companies are built on.

A bold concept perfectly in sync with the moment: It's what great companies are built on. It's what shapes the future. It's entrepreneurship at its best.

Where can you find that kind of thinking now?

We looked at 10 areas that are growing fast--from mobile technology and outsourcing to fitness and pets--and found 10 companies in each that bring jaw-dropping ingenuity to the table.

Read on, great things lie ahead.