Historic Moments on Instagram: "During How the Grinch Stole Christmas (2000), the famous tablecloth gag almost failed. The prop did not pull cleanly, so Jim Carrey instantly improvised by circling back and knocking everything over on purpose. That split second decision turned a mistake into one of the biggest laughs in the scene. Moments like this are why Ron Howard knew Carrey was perfect for the Grinch. His performance was built on physical comedy, cartoon energy, and constant improvisation th