Negativity is a big draw. I know from personal experience: the largest number of hits to this blog in a single day occurred when I posted a nasty note. Go figure.
1-3: Three Vampire Tales (New Riverside Editions)
You can snag three great classics of vampire literature in one volume. If you claim to be a vampire aficionado and haven't read Dracula, I wag my finger at you. In fact, I've handed many of my students (who have devoured the Twilight books) a copy of Dracula and they couldn't finish it. Bah.
Pick up Three Vampire Tales, and you also have Carmilla by Sheridan Le Fanu and The Vampyre by John Polidori at your fingertips. Say you like the romance in Twilight? Who is sexier than the female titular character in Carmilla?
4. I Am Legend by Richard Matheson
Yeah, I didn't like the movie either, but this book puts the whole "vampire" thing in crazy perspective. Do you like bonafide twists in your endings? Brace yourself for the final denouement in Legend. Nothing is creepier than Neville's neighbor, the now-a-vampire Ben Cortman, shouting "Come Out, Neville!" all night long.
5. Some of Your Blood by Theodore Sturgeon
Did I mention romance? I mean, Some of Your Blood is a romance at heart, right? Not to mention one of the few books I actually put down at the end and felt a legitimate chill in my gut. Sturgeon takes the reader on a crazy ride in this one. Find a copy (if you can...I think it's out of print again).
And those of you who vote "at least they're reading" when they read Twilight, well, fine. And my track & field team is practicing on six-inch high hurdles.