20 actors' most underrated movies, according to fans

• Insider identified some of your favorite actors' most underrated movies by using Rotten Tomatoes audience scores.
• While Leonardo DiCaprio is known for "Titanic," fans still love his work in "The Basketball Diaries."
• Sandra Bullock won an Oscar for "The Blind Side," but her lesser-known film, "Practical Magic," is still worth a watch, according to fans.
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