One way to prep players for a rousing superhero campaign is to show them episodes from superhero cartoon series.
There have been so many American cartoon series involving superheroes, everything from the silliness of Fearless Fly or The Tick to the whimsy of Super Six to the pulpy goodness of the 1960s Hanna Barbera superverse and Defenders of the Earth to the seriousness of Batman: The Animated Series or Ultimate Spider-Man.
One advantage to using episodes from a cartoon series is that they take up maybe 20 minutes of time and they don't belabor the plots as a way to cut costs on SPFX.
So, name one or more cartoons you might use to prep your players, and tell specifically WHY that cartoon would be the one you choose. (Or it might be a specific episode.)
-- thread inspired by (and credit therefore goes to!) celinasinha's thread http://www.penandpapergames.com/foru...animated-shows