Orcs are a pretty standard enemy in most fantasy universe. Dumb and strong, but relatively slow and barbaric, they don't tend to be the most difficult to kill, especially if there aren't too many of them. Not do in Dragons Dogma, where a single orc is the size of a traditional troll or ogre. Players will face off against a lot of these warring enemies in the game and we can see a bit of them in-action in an in-engine movie released by the developers.
They also showed off the opening movie from the game, though do bear in mind that it's in Japanese, so figuring out what's going on may be a bit of a challenge.
For more of an idea of what gameplay will be like, as well as viewing the games progression tree and character creation functions, there's yet another video. Again, Japanese, so bear with it if you don't understand:
As a big monster hunter player I'm quite excited by the idea of Dragon's Dogma, though the fact that you can see enemy health bars makes me sad. That unknown element was so much fun in MH.