The 2007 CGI Beowulf movie couldn't miss the point harder. Words from the directors and producers made it clear that they did not at all "get" one of the most amazing and hallowed works of literature and the oldest written work in the history of the English language.
Without going into full-essay mode (which I wouldn't mind doing but I doubt people would read it), Beowulf is not a story about a proud bad-ass fighting monsters. That's something that HAPPENS in the story. That's something that Beowulf DOES. It's not who he IS, and it's not what the story is at its HEART.
What makes the epic poem exceptional is the exploration of Anglo-Saxon period cultural values, the interplay of pagan vs. christian ideals, and the character himself is a true epic and tragic hero. Beowulf's true desire is for glory, but to him, glory is only found when one is fighting for one's people/friends. In the end he dies because he is unable to stop playing the hero; he says "If I can't do it, no one can," failing to recognize the potential of younger up-and-coming heroes in his midst. He even goes so far as to try to go into his last baatle alone, without any younger warriors or an army to back him up, because admitting that he needs help means he has to admit that he's not the man he was in his prime, that he's no longer the warrior-king that he believes his people deserve.
The movie feels like it read the cliffnotes plot summary, said, "This is a story about a proud badass who fights monsters," and then reduced one of the greatest characters in history to a meathead who revels in pride, lusts for power, and ends up getting killed because he made a sex-laced deal with a succubus-devil and it came back to bite him (cause when do these things ever not?). To quote Syndrome from The Incredibles, "Lame Lame Lame! Lame! LAME!"
If that weren't bad enough, they layered in juvinile, pandering crap like the Queen of the Danes being impressed by Beowulf's "endowment" (in the epic, Beowulf boasts that he will fight Grendel without his sword or shield; in the movie he declares he'll fight in the nude; FACEPALM) and digitized Angelina Jolie walking around basically naked.
P.S. If you did not get into Beowulf when you were forced to read it high school, please Please PLEASE do yourself a favor and re-visit it with the translation by Burton Raffel. Years back most of us were forced to read the Seamus Heaney translation which was, and still is, a stilted pain in the rectum.