In the scene with the scriptures Blade finds the small girl, who gives him a bit of a kicking.

Watch closely and you will notice that just after she kicks Blade through the glass, she goes to kick him again with her right leg, but instead her legs swap somehow in mid air because it's her left leg that does the kicking. Then it's back to the right leg. All this is done, without her having time to switch legs. Cool huh!?