An epic poem is a long poem that generally tells the story of a hero and his heroic deeds and clashes. Oftentimes the story is significant to a culture or region. This practice is ancient, but many writers tackle doing an epic poem to this day.
As there are so many, I've tried to collect only the most significant of epic poetry here. If anyone knows of some more or has any general critique of this list, do not hesitate to comment.