Announcing HuffPost's 2011 Game Changers... And Your Chance To Party With Them

I am delighted to announce HuffPost's 2011 Game Changers -- our third annual celebration of 100 innovators, mavericks, visionaries, and leaders who are changing the way we look at the world and the way we live in it.

As usual, we're honoring Game Changers in 12 categories: Politics, Media, Entertainment, Culture, Style, Green, Business and Technology, Sports, World, Food and Travel, Education and Impact, and Healthy Living -- and are pleased to welcome Samsung, BMW, and Chase as this year's sponsors.

Once again, you have an essential role in the Game Changers process: voting to determine the Ultimate Game Changer in each category. To salute our honorees, and help you decide who to vote for, we've put together slideshows giving you the lowdown on who we picked, why we picked them, and how they are changing the game.

It's always fun to see who you vote for. Last year's Ultimate Game Changers included familiar names like Steve Jobs (Technology), Elizabeth Warren (Politics), and Paul Volcker (Business) -- but there were also more than a few surprises.

For instance, despite the presence of a number of superstar athletes in Sports, you voted in Amy Palmiero-Winters & Catherine Hughes, two below-the-knee amputees who showed that disabilities need not be an end to dreams of athletic triumph. And while our Style Game Changers included style and fashion icons such as Tom Ford and Paulina Porizkova, and red carpet regulars Ashley and Mary-Kate Olsen, you selected Joe Bozich, who runs a garment factory in the Dominican Republic that pays its workers a living wage.

We'll be rolling out three new categories each week, starting today with Green, Politics, and Media. Click on a category to see the slideshow and cast your vote. Then share your picks with your friends -- and see if they choose the same Game Changers as you.

We'll announce the 12 Ultimate Game Changers after the voting closes in mid-October, when we'll be hosting an event in New York to celebrate all our Game Changers. Last year's event included appearances and speeches by Sean Penn, Anderson Cooper, Joe Scarborough, Mika Brzezinski, Ted Olson, Biz and Livia Stone, Mayor Michael Bloomberg, and Nora Ephron.

This year, we're doubling down on user engagement by inviting you all to submit the story of the "Game Changer in your life" -- and get a shot at winning a trip to New York to join us at what promises to be a memorable event. Click here for more details.

So check out this week's Game Changers candidates in Green, Politics, and Media, and start voting. Make sure your favorite in each category becomes an Ultimate Game Changer... and maybe we'll see you in New York next month!