I have a favourite scene for a different reason. It was the mind blowing realization of what actually did happen in the Control interrogate Root scene. Spoiler ahead:

>!At the end Root broke out of the cage because, despite what Control believed, the machine was in communication with her using morse code in high pitch sound. But since the pitch was high enough older people was insensitive to them, Control couldn't hear it. Well that was clever. Except that during the broadcast they actually did use the high pitch sound and many audience including my self couldn't hear it. But younger audience could. The amount of confusion created during the broadcast was just delicious. https://www.reddit.com/r/PersonOfInterest/comments/1up00n/decoded_the_morse_code_spoilers/<