I checked out The Perks of Being A Wallflower today.
A very good film in my opinion. The first 30 minutes were so-so to me and I wasn't sure whether I liked the main characters, but the film got better and better as it progressed. It seems like a typical coming-of-age story, and it is to some degree, but eventually some very dark themes are starting to surface and I could really feel for the character who are struggling with complex emotions. In the end I felt like I watched something refreshing and special.
There is just one thing that I disliked about the film. I don't want to spoil it, but it has to do with Aunt Helen. The film was incredibly vague about one particular thing and I think the book clears this up a lot more since when I looked it up there seems to be an almost unanimous consensus about it amongst the book readers. The reason I disliked the film being so vague about this thing is because it really explains a lot about Charlie. I get that the film might have wanted to be very subtle about it, and that's good, but now it's so subtle that I think a lot of viewers might miss it or won't get it.
Again, I don't want to spoil it, but anyone who has seen the film will probably know what I'm talking about.
In any case, I recommend this film. The trailer doesn't make it look that good, but I think it is one of the best films I've seen this year.