Continuity mistake: All wide shots of Hrothgar's hall show it in the outer ward of his fortress, about two hundred metres from the towers on the edge of the cliff, with open ground on three sides and an embankment on the fourth. But later several characters are able to step straight out of the hall onto a balcony that overhangs the cliffs and sea below.
Trivia: While working on the screenplay for this movie, Neil Gaiman constantly had people misunderstand him, and believe he was writing an episode of "Baywatch". After the script was finished, he actually did adapt "Beowulf" again, setting it in a quasi-futuristic Baywatch-setting. It made its way into his anthology "Smoke and Mirrors", under the title "Bay Wolf".