The Great Divide, OK, you see, I don't really consider this a "bad episode", I just consider it highly irrelevant to the plot, and unnecessary, I mean, you would get the series' plot without this, right?
OK, now with the actual episode. A brief summary: Aang is about to cross a canyon, but two groups of people ask for help, so Aang and the other ones split up and they get to the other side.
The episode itself is not actually bad, it's just, a filler for the next one, yeah. I find this episode so boring, so much, that I just change the channel when it shows up. So, the score I'm not giving the 6.5 to the episode, I'm giving it because it's not important for the show, I believe that this episode, is the only episode that I find boring.