Sandra BullockSandra BullockActress Sandra Bullock is best known for her brilliant performances on the silver screen.

But what most people don't know is that for years, she's been quietly donating oodles of cash to charities.

But the cat is out of the bag now...

The actress has been finally recognised for her philanthropic endeavors by the American edition of Glamour Magazine, who's named her Woman of the Year - Undercover Activist.

The actress donated a million dollars to the American Red Cross after the September 11th attacks, then another million in 2004 to help victims of the Indian Ocean Tsunami.

We've always loved our Sandy but now we love her even more.