My 30-year-old daughter devoured them in about 2 weeks, after I bought Twilight and lent it to her one night when she was visiting. Now that I have to drive to work, I get very little reading time, but I have to say I am loving it, and almost at the end, looking forward to the next one. It really is a sweet love story.
Having said that, the pre-release reviews of the film are none too flattering so I will let my daughter be the judge on whether I see it at the movies or on DVD... she's going regardless of course