It's an interesting book, and although Nabokov's writing has its faults, it's definitely worth a read. One of the curious aspects of the novel is that Humbert Humbert himself is an unreliable narrator, and the way he describes himself (and how it is repeated over and over again as the plot progresses) just adds a certain tongue in cheek attitude to the obvious tragedy that will unfold. The balancing between such aspects makes things fascinating on a certain level.

The two film versions show how people can see certain events and characters of the novel in a different light, and there are a lot of things in this novel to find if one starts digging.