Brad Pitt popped up on the Ellen DeGeneres Show.
Pitt was casually sitting in the audience with a hat on in plain clothes pretending to be a "fan."
When Ellen spotted him she invited him to come down and sit in her guest chair. Brad claimed that he had a day off and just wanted to check out the show.
During their sit down, they both admitted to sharing an ex! They didn't name the ex, they agreed to talk about it later.