Some of the things I specifically liked about the movie were the characters, as well as the issues they discussed. The leads don't always feel pleasant, and all of them have strange quirks that only further distance themselves from the audience. But it's also because of this that they feel so real. I've met people like this - the kind that think their pain is worse than everybody else's, and always have a reason to bitch about their lives. I realize they don't sound like particularly interesting people to spend an hour and a half with, but here's where the stories they discuss come into play. Each of them have something worthwhile to talk about, going off on tangents about different things they've experienced during their lives. Not much actually happens during the film to progress the story, which isn't so much of a bad thing (at least not completely). Sometimes my favorite movies are ones that don't have any story at all. LONDON certainly doesn't fall into the category of being one of my favorite movies, and I doubt I will ever watch it again... but still, for what it's worth, I never once felt like shutting off the film. I know that's not saying much, but it's something.
Audio Commentary (with writer-director Hunter Richards and co-producer Ross Weinberg): Aside from the occasional explanation of scenes that the audience is already aware of, Richards gives a pretty good commentary. I mention only Richards because Weinberg barely ever speaks. That's ok though, since the director has plenty to say.
Behind the Scenes (9:00): This featurette is sort of unprofessionally put together, making it feel a bit more raw, which I actually liked a lot. It doesn't have that annoying "commercial" feel you get with so many making-of featurettes. Still, it's not really long enough to show you much more than some cool behind-the-scenes footage and interviews, so I can't really say I got a whole lot out of it. Regardless, I'd say it's worth watching.
Deleted Scenes (14:44): There are four of them, and considering that the movie already is filled with scenes that technically aren't really needed, you can pretty much guess what to expect with these scenes.
There are also 11 Previews.