10 More Terrible Extras Who Completely Ruined Their Scenes

3. Careless - 10 Things I Hate About You

Extras cannot be relied on to know the rules of cinematography, or the boundaries of a scene, unless they are explicitly marked for them to see. This is naturally difficult if such markings would be visible to the audience, say if they were on the bright green grass of a school football pitch, so clearly sometimes it's better just to hope that the Extra can remain in character as long as they're in frame, or until the director shouts "cut."

This particular Extra from teen Shakespeare reboot 10 Things I Hate About You didn't get that memo: initially she shows her skill and commitment by listening to the silent instructions of her co-Extra to seek medical help for the impaled teacher and running off. Okay, job done - all she needed to do was continue running until the scene ended.

But instead she drops out of her role as soon as she thinks she's ran out of shot, clearly too lazy to expend any more energy than totally necessary. Sadly, she is still completely visible.