What's the trope called where Buffy and the Scoobies worked together to take down Adam, and also Glory? The Scoobies weren't just spear carriers, they were essential to the plan working. (I can also get teary eyed over deep friendships, particularly when a friend saves another in desperate times, and this usually overlaps the essential teamwork.)
As for least liked...offhand, I'm thinking of how some stories undermine their own message, or the creation of the film did. Examples are a movie made with a cynical corporate formula to show why being an individual rather than a walking corporate ad (by wearing a logo, for example) as the characters stand up against an evil corporation that was probably very much like the people who made the film in the first place (thinking specifically of Jem the movie in this case, though I'm aware the cartoon was intended to sell toys, but at least it didn't pretend to be more than it was), or that money doesn't matter when it clearly does to those who made the movie (such as cutting the parts that couldn't be used to sell toys even though it made the movie harder to understand as a result), or that looks don't matter when the character they use to show that is so obviously hot even while wearing the glasses and frumpy sweater. I'm not sure that's actually a trope, however.
Hmmm...offhand, I guess the fighting turning into love, that's a definite trope. That would include Xander and Cordelia's kiss in the basement, by the way, though this trope often has enemies doing it (sometimes where they inexplicably join forces or become the good guy, with all legal charges that might exist against them dropped, etc).
