Joe, I was really going to leave out the barbarian-paladin, but you convinced me otherwise. So when you see him in there, you'll have yourself to thank for that.
Here's a rundown:
The Feats chapter includes a lot of "rage" feats, abilities you can activate by spending another rage, and a quick and easy Tribal or Totem Focus section.
The Skills chapter includes quite a bit of new stuff. There's savage crafting, which lets you make savage weapons out of bone, stone, etc. There's no raw material cost on savage weapons, which allows a barbarian get by in the wild, but such weapons break a little more easily and the armor isn't quite as good as iron, natch.
Next there's a bit on "shoddy crafting" which lets half-orcs crank out weapons and armor with less time, less cost, and less skill than others. Harken to the scene from Fellowship where Saruman's orcs are busy equipping themselves and you have the gist of it.
Next up is Handle Animal, which includes lengthy (but ultimately simple) rules for breeding and crossbreeding of animals, beasts, and magical beasts. We also add Vermin to the list of creatures you can train (at an increased DC, of course!)
Wilderness Lore includes more detailed rules on "harvesting" from the wild. A quick bit on using Wilderness Lore to equip yourself with a fire and a set of savage tools (which you can then use for the Craft skill). How to extract poison or other useful materials from dead critters. How to preserve and use the hides of magical creatures (beyond just dragons...) and integrate those magical bits into masterwork components.
Finally, the Prestige Classes. And yes, the barbarian-ranger is one of my favorites. (Not much fun being tracked by a guy who runs faster and longer than you can manage...) I am also partial to the barbarian-druid. He's really into crossbreeding.
All of the half-orcs presented are rather wicked, and the illustrations bear this out. (We'll put art from the book into the 'rotation' on the front page of the website sometime in the next couple of days.)
This definitely isn't the book for players who think that their orc heritage is something to be hidden or ashamed of. Players who embrace their orcish roots and their savage barbarian ways will love it.
Wulf