This is a horror comedy that came out in late 2009. I actually caught it on one of these streaming video sites. It stars the very hot
, who plays a bass player in this rock band, who gets turned into a vampire. In one scene the other band members ask her if she has vampire powers, and she says "Yes. I'm super-fast, super-strong, and I can turn into fog." (it's odd the trailer cuts out the part where she says she's super-strong, though I didn't see her demonstrate any super-strength, unfortunately (I admit I didn't see it from the very beginning, but I don't think there's any super-strength scenes). You do see her move at super-speed though in that one scene, at around 0:50 in the trailer. I think the main appeal of it for me was just imagining her doing super stuff, which is what I usually end up doing with movies like this.