Theodore Martello played a Wall Street guy in a scene opposite Lady Gaga in "Joker: Folie à Deux."Theodore Martello/GettyTheodore Martello landed a role in "Joker: Folie à Deux" after meeting Todd Phillips at a grocery store.He appears in a scene with Lady Gaga's Lee, who throws a trash can through a display window."Showing your face and getting out there is key," he said of the advice he'd give aspiring actors.If there's one thing Theodore Martello figured out in his growing career as an actor, it's that you can't be afraid to take a chance.That's exactly what he did one afternoon last year when he happened to be at the Bristol Farms grocery store in West Hollywood at the same time as director Todd Phillips."I noticed Todd in the line section I was on," Martello told Business Insider.