Some popular 3D movies include "Avatar," "Pirates of the Caribbean: On Stranger Tides," and "Toy Story 3." These films have been highly successful at the box office and have contributed significantly to the growth of the 3D film industry.

The popularity of 3D movies can be attributed to several factors. Firstly, 3D technology provides a more immersive experience for viewers, making them feel as if they are part of the action. According to a study by the Digital Cinema Initiatives (DCI), 3D movies can increase audience engagement by up to 40%. This immersive experience is particularly appealing to families and moviegoers seeking a unique cinematic experience. Additionally, 3D movies often have higher ticket prices, which can lead to increased revenue for studios. For instance, "Avatar" grossed over $2.8 billion worldwide, making it the highest-grossing 3D movie of all time. The success of 3D movies has also spurred innovation in the film industry, with advancements in 3D camera technology and post-production techniques.