Even celebs get tired of their ho-hum, day-to-day existence. So, what do they do? They create alter egos. See if you can match each star to his or her dark side.
When celebrities get bored of their public personas, they often take a page out of this fictional classic that explores the concept of an alter ego. Some -- like this actor, writer and producer -- dress up like the opposite sex. Others -- such as this famous recording artist -- use it to tap into their darker side.

The 53rd Annual Grammy Awards will surely see many amazing performances by today's best artists. But over the years some of the biggest legends in music have braved the spotlight to deliver their signature hits and team up with beloved icons for some of the most memorable live music in history. From Kanye West and Michael Jackson to Simon & Garfunkel, here are just a few of the greatest Grammy performances to relive.

While most celebrity friendships seem like they were made for one another others are utterly unlikely.

From the 88-year-old who hosted "Saturday Night Live" to the QB who uplifted his team and town, several people have come back bigger than ever in 2010. Meet the following folks (and one company) who overcame adversity to achieve dramatic success.