Saruman and Wormtongue
Gríma Wormtongue: You told me to; you made me do it.
Saruman: You do what Sharkey says, always, don't you, Worm? Well, now he says: follow!
Source: The Lord of the Rings, book VI: "The Scouring of the Shire"
Note: Saruman, preparing to leave the Shire after his men have been killed or driven off by an army of hobbits, has just revealed that Gríma Wormtongue killed "Chief Shirriff" Lotho Sackville-Baggins. Immediately after saying this, he savagely kicks Wormtongue in the face, provoking Gríma to turn on his master and slash his throat. Gríma then tries to run away and is shot by hobbits.