Here's a sequence Avatar: The Last Airbender fans will be seeing many times in the future--the opening title sequence for the hugely anticipated sequel The Last Airbender: The Legend of Korra, which is slated to debut on Nickelodeon in 2012.  So far 26 episodes of The Legend of Korra, which is set 70 years after the events of the Avatar: The Last Airbender series.  The new series focuses on Korra, a young girl from the Southern Water Tribe, who is described as "hotheaded, independent, and ready to take on the world."