Cursed (2005)

Ellie and her younger brother Jimmy get into a car accident after a large animal runs out in front of their car.  While trying to help the other driver, whose car rolled down an embankment, the two are bitten by an large wolf-like animal who kills the other driver.

Jimmy begins to believe that the creature they ran into was a werewolf, but Ellie thinks that's ridiculous.  She's more concerned with her boyfriend Jake, who is opening a new club and who she just found out has a reputation with the ladies.  Jessie has his own problems also since he's not very popular at high school and keeps getting picked on by some guys on the wrestling team.

While each is grappling with their own problems, they find themselves becoming more assertive and more confident.  But they also find strange things happening to them, such as being able to smell blood over long distances.

Cursed gets a real beating in the reviews I've seen, but I enjoyed it. If you're looking for something scary, you'll be disappointed. But if you just want a fun little movie to watch some rainy afternoon, it's good viewing.