It is no surprise that the Producer of Southland, John Wells, also produced...wait for it...ER!! The pilot episodes of both series revolve around a rookie's first day. Officer Sherman shoots and kills a perp at the end of his first day and there is a nice shot of him staring over the body contemplating in shock what he has done. When his superior officer sees him like that he pulls him aside and give him a great speech, "[...]This is a front row seat to the greatest show on earth [...]. Yes sir, you can and you will, I guarantee it. Because it is relentless and it gets to you. And it seems like it changes nothing, but a day like today, with some interesting capers and a few good arrests...that's good. But every once in a while you get to take a bad guy off the streets for good and that my friend is God's work. Now you wanna be a pussy and quit, then you quit. You're a cop because you don't know how not to be one. Feel that way...you're a cop. If you don't...you're not. You decide."
On Dr. Carter's first day he sees a lot of crazy shit and ends up getting sick at the end of the day. He goes outside for air and is followed out by his superior, Dr. Greene, who gives him a great speech, "See there's two kinds of doctors. There's the kind that get rid of their feelings and the kind that keeps them. If you're gonna keep your feelings, you're gonna get sick from time to time."
You gotta love it when TV recycles!! How green(e) of them!