An IRS audit triggers a multiverse crisis, which is honestly the most realistic tax-season plotline going.
Fun fact: Ke Huy Quan hadn't had a major acting role in over 20 years before winning the Oscar for this.
Matt Damon wrote himself a role where he's the smartest person in every room, fair play.
Fun fact: Robin Williams improvised the story about his wife farting in her sleep, and the crew's laughter is genuine.