In Star Trek IV: The Voyage Home a Finnish whaler can be heard exclaiming 'Perkele!' after the Klingon Bird of Prey decloaks ahead of the whaling vessel.
The word is very common in the country and likely the best known expletive abroad, and enjoys a kind of emblematic status; for instance, the Finnish black metal band Impaled Nazarene named its 1994 patriotic album Suomi Finland Perkele (using the word as a reference to Finnishness, not to the devil) and the more conventional M. A. Numminen released a 1971 album known as Perkele! Lauluja Suomesta ("Perkele! Songs from Finland").