You unlock these by finding movie reels in the Story Contracts (the games main levels), and these will give you special crime scenes to clean that are inspired by many movies. (theswitcheffect.net)
Decorated with an opulent, classic Hollywood theme, the ballroom was adorned with vintage cameras, metal movie reels referencing best picture nominees and winners throughout Oscar history, sparkling crystal chandeliers and lush floral arrangements. (latimes.com)
They required a surprising amount of skill, especially if you feel the need to collect all the extra tickets and movie reels available in each stage. (thatvideogameblog.com)