Sufferers of what some girls call Obsessive Cullen Disorder know this is no ordinary weekend.

It's when "Twilight" comes out on DVD, with the sort of release parties usually reserved for Harry Potter books or Steelers Super Bowl discs.

Stores throughout the country are holding parties today from 10 p.m. to midnight, when the DVD officially will be released. Go to twilightthemovie.com and plug in your ZIP code for locations.

However, at some stores (such as the Hot Topic at Ross Park Mall), admittance to the party will be with a pre-sale gift card and store invite. But there may be additional DVDs for sale to the public there and elsewhere, so expect a separate line at some locations.

The DVD arrives four months to the day after the theatrical release of the movie, based on the first book in Stephenie Meyer's series about a vampire named Edward Cullen (played by Robert Pattinson) and a human girl, Bella Swan (Kristen Stewart) who falls for him.

The two-disc special edition has the movie; audio commentary by director Catherine Hardwicke, Pattinson and Stewart; five extended and five deleted scenes; music videos by Muse, Paramore and Linkin Park; a 54-minute feature that covers some familiar and unfamiliar ground such as vampire baseball and how visual effects wizards added trees, ferns, storm clouds and lightning; and a snapshot of 2008's Comic-Con where screaming fans got their first taste of the film and of Pattinson.

The commentary is serious and silly as the director and her stars chatter about veggie burgers and last-minute lines of dialogue (the "spider monkey" quip). Teen heartthrob Pattinson jokes that he looks like he's either an anime character or has had facial reconstruction surgery or a bad face-lift.

The five deleted scenes are brief and expendable, although one features some of Hardwicke's favorite lines from the book. Nevertheless, when the movie was being edited together they were jettisoned for reasons of pacing.

The documentary about the making of the movie gives equal time to cast and crew and demonstrates how some of the stunts were done.

Instead of destroying the illusion, they remind moviegoers that it's possible to make magic without green screens, even when that means creating a meadow on a Los Angeles golf course or harnessing stunt performers in a tree top and filming them with a helicopter that nearly blows them away.