It seems like you can usually tell in the first 10 or 15 minutes of a movie like this, and 100 Bloody Acres has a great hook right in the first scene. Reg pulls over when he sees a crashed van by the side of the road and - because the audience already knows what he is up to from the description of the film - decides to throw the dead driver into the back of his box truck. A great hook moment in this scene is when Reg gives up on trying to drag the body all the way to his truck and instead hops in and backs it up closer to the body. It's something small, but it let me know that this was going to be a very smart comedy, and the kind that I particularly enjoy watching.
All three of these guys are very likable, despite the minor flaws in their morals. James is the sweet, puppy-dog boyfriend, who is countered by the arguably hotter and cooler Wes. Wes seems like he's supposed to be the cocky asshole but he is in fact incredibly likable just because of how funny he is, especially when on acid. Sophie is a great female character that I always like to see because she is not the traditionally super-sexy or hot horror girl. Again, despite the fact that she is cheating on her sweet boyfriend, she has a great personality, and seems genuinely nice when making conversation with Reg in the truck. She also handles herself well as the movie gets even more crazy, while the boys make silly - and funny - little mistakes.
And really, the whole movie is like that. There are a lot of things that happen in the plot that are just completely out of nowhere and unexpected, and while some of these elements drag the story down a little bit, it's still a joy to watch and be surprised and entertained at every turn. There's a whole thing with the brothers' Auntie Nance that I can't get into because you just have to see it for yourself, plus a weird little bit of side action when Lindsay is chasing a hopped-up-on-acid Wes through a small, closed-down roadside attraction. Right after this, there's a scene that didn't really need to be included but is still great to watch because it involves a small appearance by John Jarratt.
100 Bloody Acres is definitely my kind of film. It perfectly brings together the kind of smart, subtle humor that I find the most appealing, with the kind of crazy bloody gags that appease the true gorehound in me. There is a Tucker and Dale vs. Evil element to the Morgan brothers' relationship and to the story overall, so if you dug that movie, you'll probably dig 100 Bloody Acres as well. Don't let this little gem of a film pass you by!