These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Brilliance: Casey sleeping with Cappie in the Pilot, at first it seems to be easy since he's clearly still in love with her, and she doesn't really seem to be the one night stand type. However, as the series progresses you see that Cappie is the person who would be most likely to get to get to Evan, he's unhappy that she did it, but it's the revelation it was Cappie that twists the knife.
Fridge Horror: One of the episodes mentions CRU playing "State" in football. The show takes place in Ohio. That means they played Ohio State, one of the best teams in college football. The result wasn't mentioned probably to avoid the downer ending that would have been their team getting soundly demolished by OSU.
Harsher in Hindsight: In "Liquid Courage" Casey remarks that the Evan's parents dinner "needs DJ AM fast".
Cappie and Casey in the pilot since you realise how much she must have been hurt to feel that made them evennote it takes until the finale for Evan to reach a point where he accepts that Casey never had or could love him as much as Cappie, and even then he's not quite okay with it