Options 6 and 7 were included for the lulz. I couldn't possibly include all the worthy vampire movies, so I just kind of put a smattering of what I thought represented all the worthy genres.
For the record, here are movies that I would have included in a more complete poll:
Let the Right One In (Great movie and should have included it over Vampires, probably)
Nosferatu (A great movie but I didn't think many people would even know what it was)
The Lost Boys (its like the 80s threw up on a vampire movie, mostly like it for nostalgia)
Daybreakers (haven't actually seen this one yet but heard its good
30 Days of Night (okay but wasn't too impressed with it, I did love that it made some pretty terrifying vamps though)
Blade (I'd include it because I know people like it, but I think all 3 are fucking terrible. The first would be okay if they didn't go all mid-90s CG in the climax.)
Underworld (again would include for others' sake. I hate how much it rips off from White Wolf and World of Darkness but Kate Beckinsale is pretty badass)