I really liked this film. It is a guilty bit of fun, with great actors and musicians in every scene. It doesn't take itself too seriously, and it looks like the actors are having a good time.
Is it the greatest vampire flick ever made -- probably not, but it has no such pretension, either. It is a fun, quite novel look at vampires.
Very little in the way of exposition on what vampires are (or are not) is given, which was actually quite refreshing. In this story vampires don't need to be taught their natures, so there are no how-to hunting scenes, or anything like that ... it just chugs along with a rock and roll road trip story, and just assumes that the audience can accept that the vampires are vampires, and that they do vampire-like stuff. (Stakes and sunlight are bad, no mention of crosses or religious relics, no glittering like twilight - though they do shine sometimes)
I went into it expecting a bit of creative indie film fun, and that's exactly what I got.
Things that I especially liked -
Moby as an obnoxious hard rocker (the biggest rock star in Buffalo! -- People from the UK may not necessarily get why that is funny, but it is.)
Hugo, the hapless French Canadian roadie
Dmitri Coats as Queeny the head vampire, who was accurately described as being, "like a junkie from hell."
Alice Cooper & Iggie Pop, having fun being versions of themselves.