Mick Jagger Birthday: The Rolling Stones Frontman Turns 68 (PHOTOS)

Sir Mick Jagger, the legendary frontman for The Rolling Stones, turns 68 today, and despite what critics say, he's still doing what he does best--rocking out.

Much of the recent focus on The Stones has been on that more than 50-year-old public rift between Jagger and bandmate Keith Richards. But Jagger keeps rocking on--despite the critics who have been telling him for years that it's time to finally hang up the microphone. In true rockstar fashion, Jagger likes proving people--especially his critics--wrong.

Last year, Jagger recorded a new version of "Plundered My Soul" for the "Exile on Main St." re-release. Not to mention the album of his new supergroup, SuperHeavy, is coming out later this year.

Sir Mick was the poster-boy of seemingly endless energy when he was younger, but he's managed to maintain his work ethic and magnetic charisma throughout his more-than fifty-year career. Jagger's last tour with The Rolling Stones, 2005's "A Bigger Bang," was the second-highest grossing tour of all time, and the album was a critical success.

And over the years, Jagger's been a consent source of musical inspiration for popular and indie artists alike. Ke$ha sings about kicking her suitors "to the curb unless they look like Mick Jagger," in her breakthrough hit, "Tik Tok." Meanwhile, Maroon 5's Adam Levine and pop-diva Christina Aguilera wish they had "Moves Like Jagger."

We're celebrating Mick's birthday with a look-back at some of his most memorable moments and career highlights. Take a look below.