In Face/Off, when Castor Troy wakes up from his coma and finds that his face has been removed and grafted onto Sean Archer, he forces Dr. Walsh to put Archer's face on him. Afterwards, Castor goes to Erewhon Prison where Archer-as-Castor is trying to learn the location of "Sinclaire" from Pollux Troy.
Castor Troy: [grins] Oooooee! You're good looking! Ya hot!
[Archer stares at Castor]
Castor Troy: It's like looking in a mirror, only not. Huh. [beat]
Sean Archer: Troy??
Castor Troy: Now that is between us, OK?
Sean Archer: [stammers] But you were—were—
Castor Troy: In a coma? Nothing like having your face cut off to disturb your sleep! [flashes a newspaper article in the real Archer's face] Read the newspaper lately? [Cuts to shots of Dr. Walsh, Tito and Miller bound, gagged, and being doused in gasoline]
Sean Archer: [seeing an article headlined "Deadly Inferno at Walsh Institute"] You killed them?
Castor Troy: Yeah well, beats paying the bill, huh? Come on, uh, if a face lift costs five grand...see anything you like!!??? [shows Archer's wedding ring on his hand; cut to a close-up of Tito screaming through his gag as he is doused in gasoline]
Sean Archer: Tito! [A hand flicks on a cigarette lighter and drops it in a puddle of gasoline, sparking a fire that spreads towards the hostages]
Castor Troy: I torched all the evidence that proves you're you, okay? Sooo, wow! Looks like you're going to be in here for THE NEXT HUNDRED YEARS!! Now, I have got to go. I've got a government job to abuse and [whispers into Archer's ear] a lonely wife to fuck. Oh, I'm sorry...make love to! God, I miss that face!