: A pivotal episode focusing on Jack Shephard as he, Locke, and others pursue the kidnapped Claire and Charlie. It explores Jack's troubled relationship with his father through flashbacks and introduces Ethan Rom as a major antagonist.
: Aang and the group arrive at the world's largest canyon. Aang must mediate a century-old feud between two Earth Kingdom tribes to help them cross safely. [S1E11] Episode
: Released as a bonus episode two weeks after the rest of Season 1. It features two distinct animated and live-action stories that explore the nature of dreams and Morpheus's past relationships. : A pivotal episode focusing on Jack Shephard