From Justin To Kelly (2003)

Revealing mistake: When the song "Forever part of me" is right after the scene were both Kelly and Justin are talking to there friends about finding one another, right before the song begins the camera pans to Justin and behind Justin in the left side of the screen there is a guy lip-syncing to the words. But the words in the song have not started yet.

Revealing mistake: When Kelly gave Justin her phone number, she used an area code from Texas (972) which is where they are all from. But when Alexa later gave Justin a phone number for Kelly she gave her own cell phone number. She used the area code 239 which is actually in Florida.