When John is recuperating from injuries, he unconsciously calls out Shayera's name. This suggests he hasn't recovered from their break-up after the events of "Starcrossed", but the closed captioning for the DVD read that he says Kara's name, so this may just as easily be a goof. See more
During Superman's speech, the positions of the group listening change, to the point where many disappear and reappear, and not always in the same location. See more
We sent the Lantern for you because you never gave us an answer.
Come on, I don't belong up here, fighting monsters and supervillians. I just help the little guy and a big club like this, you tend to forget all about him. So, gee whiz, I'm flattered to be asked and all, but no thanks.
Suit yourself. Those monsters you don't fight? They tend to step on little guys.