blockbuster

blockbuster
    n 1: a large bomb used to demolish extensive areas (as a city
         block)
    2: an unusually successful hit with widespread popularity and
       huge sales (especially a movie or play or recording or novel)
       [syn: {blockbuster}, {megahit}, {smash hit}]
    

22 Moby Thesaurus words for "blockbuster":
      astonishment, blow, bomb, bombshell, catch, earthshaker,
      eye-opener, joker, kicker, peripeteia, revelation, shocker,
      staggerer, startler, surprisal, surprise, surprise ending,
      surprise package, surprise party, switch, thunderbolt,
      thunderclap