When Victoria first gets into the bath and leans back, her hair and chest are already wet from previous takes.
When the suitcases are being put into the minivan, a small brown case is put in, up against a bigger beige case. in the next shot, the beige and brown cases have disappeared and Mr. Palmer is putting a blue case in. In the last shot, the small case is gone and Mr. Palmer is putting the beige case in the minivan.
In this episode there is a blood drive for the American red cross, in this episode our characters are only 14-15 years old, and donating blood. You can't donate until you are 17.
Chloe gets Jeff's and Amy's blood types from the paper work at the blood drive. In reality, blood type is not included in such paperwork and typing isn't done until the blood has been sent back to the lab.
Clark tells Chloe he and Lana are meeting at his place but they actually go to Lana's house to organise blood drive.