In the scene where the sisters are in P3 with Nathalie they are writing spells and the begin to talk when you see Pheobe take the cap of her pen and put it on the back of the pen. Then the camera goes away from her, then back to her and the pen cap is off on the bar top. Then the camera once again goes away and back again, and the pen cap is back on the back of the pen.
Phoebe is screaming out Leo's name to call him, yet Piper and Prue apparently don't hear her and don't question why she's calling for him.
When the girls are in P3 working on the different parts of the vanquishing spell, Phoebe says hers came out country western, and says, 'I'm rejectin' your defection.' She should have said deflection.