Flowers of Evil 8:
That was really something. The long scenes of them walking without any real dialogue were quite effective. The show did a great job at conveying the general atmosphere of the town late at night (and how gorgeous does all of the art look here?) and the state of mind of both Kasuga and Nakamura as they walk along and contemplate what they've done. The viewer can't really help but to think about all of that, too, and wonder how it will play out. It's almost all anticipation, but the eventual release is worth it.
And then society as middle school aged shits know it collapses. Saeki's personal plight in all of this is lost by the rest of the class aside from her friends, as everyone freaks out and speculates about the pervert and wonders about reporters coming, and the rest of the school starts going mad. The victim is no longer relevant, and now they're just watching the train wreck and getting excited about it.