I reread Dracula every five years or so.

I would recommend to anyone who hasn't read Dracula, Frankenstein, Phantom of the Opera, and/or Dr Jekyll & Mr Hyde or is looking to reread them to check out the Essential editions edited by Leonard Wolf, which enrich the stories with a deeper historical / sociological reading by supplimenting the material with detailed annotations. They also contain appendices detailing the different films the novels inspired.