Though they try not to play it for sentiment, it is heartwarming that Debra is the one who can calm Corey down after her freak-out, since she and Corey normally can't stand each other.
There is actually something heartwarming about the resolution of the "Warren the Shoplifter" story-arc. Especially at the end when Berk the Asshole Owner is yelling for "someone who works here" to come help him, and who should appear but Warren the Former Shoplifter.
Warren: "I can help!" (hold up his employee ID, which reads 'Hi, My Name is Warren!') "I work here!"