* When Dekker is yelling at Slater to stop during his first appearance, it normally sounds like the typical thing he does whenever he is on screen - unintelligible angrish - however the look on his face and the stuff he is saying sounds more out of concern for Jack. Turns out this was because he knew Jack's son was one of the hostages and he was merely trying to keep Jack from being too emotionally involved in the situation.
* The offscreen moment that Danny describes, where Jack saved Dekker, who generally does nothing but yell at him, from public humiliation.
* Danny's mum bringing out Jack's more sensitive side.