I would have to agree with reading The Help. When I read it, it spoke to me in a way similar to To Kill a Mockingbird. Of course, it is impossible to compare the two on the same scale: Mockingbird is a classic. The Help may never be a classic, but what I like about it in terms of the classroom is that it has been made recently enough to draw students who cringe when asked to read novels that they consider "old" because they believe the age of the novel matters—not having discovered (I think) that some literature is timeless. The message is strong enough to be really valuable in teaching students about the Civil Rights Movement and the concept of racial equality.
Extremely Loud and Incredibly Close may also appeal to our students. I know, however, that in our district, we would have to have something "in the wings" for students who were impacted in a strongly personal way on 9-11. We are always asked to keep themes and topics of literature in mind if, for instance, there is a suicide in a book: if someone in class has had an experience with this, we allow them (and/or their parents) to decide if reading the novel is going to be too uncomfortable.
Personally, I would not want to read Lovely Bones with my kids. That's just my own preference.