Cheeky hobbits and the comfortable levity of friends reunited. There is quite a lot to be said for the bonds that are forged through shared trauma and hardship. The hobbits are some changed for their experience, both in mind and body (the latter thanks to the entish draught). Meanwhile Aragorn is becoming altogether more with his different aspects coming into a balance with each other. The world has grown a little smaller too, with hobbitish pipe weed discovered in Saruman's private reserves. Aragorn notices the oddity, but does not quite mark the significance of it. Th3 hobbits and the Shire are no longer a passing rumor to those in power, and that "Wormtongues may be found in other houses than King Theoden's." The ents themselves deliberate, but when they come to a decision it is with fury and purpose, marching on Isengard. The battle as described has a discomforting air of menace and danger otherwise missing from the encounters before. The huorns to wild to be safe, even if fighting on our side, and perhaps there's something just innately unsettling about the woods rising up in violent anger. We learn that Gandalf knew perfectly well what he was bringing the company into, having already visited the captured Isengard. During his visit he is most hasty and is off before much time is spent with the erstwhile hobbits, racing back into peril and to generally save the day. Rather than getting the assault on Isengard as recollection, the film gives it to us interspersed with the siege at Helm's Deep. The process and battle involving the ents are barely the same events between the two. The hobbit trickery makes for a fun bit of interplay, and Merry and Pippin are just wonderfully cheeky throughout. I do have to say that Treebeard is clearly a shit tree herder if he's only just realizes the devastation Saruman inflicted on the forest. This also conflicts severely with ents and huorons sneaking up on the gates, watching Saruman's people marching out of Isengard to Rohan, and how they pulled apart the masonry like roots growing into rock. Jackson portays the ents as both more and less vulnerable than Tolkien. The one that catches fire survives to douse the flames, while others are overwhelmed by attacks that should leave them largely untouched. The flooding of Isengard should take place at night, but considering all of the other changes... it's a minor one and added contrasting action.