Blade Trinity features Dracula as a being so disgusted with the anicent world he goes into a self induced slumber until the vampires disturb him, something which he is not too pleased about or to quote the film "...boy was he was pissed".
Queen of the Damned features the King and Queen of Vampires drinking so much blood in the ancient world that they lost the will to drink and decended to slumber.
An interesting idea that even immortals can grow tired. The vampire is an interesting metaphor - perhaps we are all vampires in our way.
Vampire
Carriages play their sticks on the cobble stones
play boneless tunes in the brash brick street.
Maidens appear from a hunchback beetle
to stalk the path with a walk like brides in waiting.
Old as oak casks the wearisome watch the ladies charade.
Fangs tucked like reluctant coins behind cushions
the Vampire drinks red wine
refuses the blood.