[Illusion]

Teen Titans didn't technically ended story wise because it was supposed to have another season but it was canceled. The last episode I believe was Beastboy found a girl who looked exactly like Terra and it was just him trying to see if that was his Terra. Which it ended where we spectated it could be or it couldn't be.

Avatar the last airbender wasn't canceled, it just ended story wise. There's a difference between cancelled and ending. But hey good news is that there is going to be a new series spinoff 80 years in the future featuring the next avatar. It's going to be called Avatar: The legend of Korra. Set to premiere either this fall or early next year. Sadly it's only going to be 28 episodes I believe, hopefully Nickelodeon will push and try to get another season or series out of the creators.