I saw Beowulf last night with the wife. The 3D is much better than in the past but still not perfect. There seems to be distinct levels to the 3D instead of a gradual change in the depth. But, like I said, much better than in the past. You won't come out of the theater with a headache.
The modeling of the characters varied too. Some where incredibly detailed and life-like while others were only so-so. If they can get everything as realistic as the life-life characters, then we could easily see movies without big names in them. If I were an up-and-coming actor, I would be a little concerned about having a job in the future.