When Joanie is killed as a werewolf, she is lying flat on her back with her chest and hips visible to the camera. When the officers return to the scene, Joanie is now human but lying on her side with her back to the camera.
(at around 24 mins) When Ellie and Joanie are arguing in the hallway at Ellie's office, first Joanie's hair is over her shoulder and her purse is on her arm. Then, no purse, and her hair is behind her shoulder. Next, hair is forward and purse is back on her arm.
(at around 47 mins) After Ellie has tasted Craig Kilborn's blood, she goes outside of the studio. She stops and looks at her hand, but she looks at her left hand for the pentagram. She should be looking at her right hand, as in the rest of the story that is where the symbol shows up.
(about 20 mins into the movie) After the attack, when Ellie wakes up and goes downstairs, She checks the front door lock & the chain door fastener to make sure they're fastened. When she goes through the kitchen and is startled by her boyfriend, Bo, he's in the house just using a key. (How did he get past the chain door fastener?)
(at around 20 mins) Ellie can clearly be seen stepping up onto something just before she and Jake kiss in her dream near the beginning of the film. Christina Ricci is 13 inches shorter than Joshua Jackson.
When Christina Ricci picks up the
silver knife off the floor in her house and her hand
starts to smoke, pay attention to the shadow. You can
see smoke coming from her wrist before her hand
touches the knife.