Treebeard, an Ent. Ents are a race of beings in J. R. R. Tolkien's fantasy world Middle-earth who closely resemble trees. They are similar to the talking trees in folklore around the world. Their name is derived from the Anglo-Saxon word for giant. They are ancient shepherds of the forest
For those who don't own the EE DVD, the scene where Bombur races past all the other dwarves to get to Beorn's house before them has a story. Steven Hunter (Bombur) realized that the shot they were filming wouldn't show his feet, so he had the costumers help him get his running shoes on. Enabling him to outrace everyone, much to their surprise.