Paul Giamatti has found a new way of disciplining unruly horses on film sets - punch them in the jaw.
 
The star was tired of having to reshoot scenes in his new medieval epic "Ironclad" because his steed would not stand still - so he decided to let the beast know who was playing the king.
 
The actor, who plays King John in the film, explains, "The horse in this was a real b**ch... It kept walking backwards just to kind of mess with me... so I punched the horse... I clipped him in the jaw."
 
And the brute force worked on the animal: "After that, that little crapper was on point."