i suggest "harrison bergeron" as a good place to start with vonnegut. mother night is also exceptionally good, although neither can really compare to slaughterhouse-five.
i'm not even going to attempt a eulogy [eugoogley, according to mr. zoolander] for mr. vonnegut. instead, what follows is a favorite passage of mine from "harrison bergeron":
and then, neutralizing gravity with love and pure will, they remained suspended in air inches below the ceiling, and they kissed each other for a long, long time.