Ten movies opening during the summer of 2005:
- The Cave (August 19)
- Brothers (May 6)
- The Pink Panther (August 5)
- A League of Ordinary Gentlemen (May 13)
- Night Watch (July 29)
- Lords of Dogtown (June 3)
- The Warrior (July 15)
- Mysterious Skin (May 20)
- Rebound (July 1)
- The Perfect Man (June 17)
I'm using the definition of summer used by Entertainment Weekly here, in their Summer Movie Preview.