Answer: megahit

AnswerCrossword Clue
MEGAHITBox office smash
MEGAHITHuge bestseller
MEGAHITBlockbuster
MEGAHIT"Titanic" or "The Sixth Sense," e.g.
MEGAHIT"Titanic" or "Star Wars," e.g.
MEGAHITBroadway smash
MEGAHIT"The Dark Knight," e.g.
MEGAHITBlockbuster movie
MEGAHITMultiplatinum record
megahitenterprise, as a movie, that is outstandingly successful
megahitsomething extremely successful