Samurai Jack/Tear Jerker


 * Near the end of episode L (#40), when X9,  Cue Jack showing a worried expression at possibly killing a perfectly innocent robot.
 * "Lulu... sweet thing."
 * How can you forget "Jack and the Lava Monster"? Jack fights his way through a maze of death only to confront a near-invincible giant lava monster Then we learn that  Blast it, I'm tearing up just writing this one.
 * "Free"
 * The ending to "Jack and the Mountain."
 * "Jack Remembers the Past" is heartbreaking.


 * For the series as a whole, especially regarding the ending: