4. If you're gonna shower with Keith Urban, bring a pen.

He may have you take notes. According to a 2005 feature in Country Weekly, Keith Urban enjoys writing songs in the shower. He at least comes up with ideas while getting sudsy, but maybe he used to write lyrics into the steam on the shower doors -- who knows?

More recently, he's taken to writing in a natural light-flooded room downstairs in the home he and Nicole Kidman own in Leiper's Fork, Tenn. It's an old farmhouse that inspires the father of two's creativity in his 40s. The singer always writes in pen -- never pencil, and never on a computer. "I can't type fast enough," he says.