Near the end of HBO's Six Feet Under, the character of Nate Fisher... stops being one of the most unpleasant main characters in the history of television, and becomes THE most unpleasant main character in the history of television.
Also, we discover that the Fisher family... is a bunch of assholes who deserve all the terrible, terrible things that happen to them.
Finally, in the biggest shock of all, continuity with another famous show is established by having... David Fisher move in with Mr. Belvedere.