Here's a look at 'Today in Rock History' featuring: Timbaland is 48. Superstar rapper and producer. Got his stage name because he likes wearing Timberland boots. His real name is Timothy Zakar Mosley. Jon Hamm is 49. Pearl Jam's bassist, Jeff Ament is 57. Chuck Norris is 80. Today in 1977, astronomers discovered rings around Uranus.