* Mr. & Mrs. Smith (2005): There's a scene where Pitt's character, John Smith, dances with his wife, Jane (Angelina Jolie), in their kitchen. It's a playful, fun, and surprisingly sensual scene.
* Ocean's Eleven (2001): Pitt's character, Rusty Ryan, has a brief but entertaining dance sequence in a casino, showcasing some comedic and energetic moves.
* Burn After Reading (2008): In this Coen Brothers comedy, Pitt's character, Chad Feldheimer, has a short dance scene with his wife (Frances McDormand). It's more of a drunken, awkward, and humorous moment rather than a polished dance routine.
You could also argue that he did some "dancing" in Snatch (2000), where his character, Mickey, has a few energetic and slightly uncoordinated moves. However, it's not a full-fledged dance scene.
While he may not be a professional dancer, Pitt has shown that he's willing to dance when the script calls for it.