OK, this is too much fun: the Action Film Trailer Generator. Some samples:
In a cursed kingdom of madness, in an age of hopelessness, a dancer combats terrorism.
In a godless universe, in a time of danger, a secretary and a spy quest for hope and oppose lawlessness.
In a lost universe, in an era of sin, an armorer and a bounty hunter battle terrorism.
In an infernal world, four acrobats and a tomb-robber seek a mystic artifact.
In an ominous empire, in a time of wonder, six assassins quest for love and fight terrorism.