Or maybe one as a metaphor for the other. Still, it's not a great example. I'm struggling to think of examples of movies where characters really are motivated

Or maybe one as a metaphor for the other. Still, it's not a great example. I'm struggling to think of examples of movies where characters really are motivated by doing stuff just for the hell of it. The only example I've got so far is the Joker from The Dark Knight. His motivation throughout is exactly what Zuckerberg described -- doing things because he can and because it would be interesting to try. It's not exactly a positive portrayal, though.