Possible Clues:

• Film rating that's apt for this puzzle's theme
• Like 'Wonder Woman'
• Somewhat family-friendly ... or a title for this puzzle, as suggested by the completed grid?
• Like every Bond film since 1989
• Rating of 'Avatar'
• Movie warning
• Like the movies '10,000 B.C.' and '2012'
• *Not for everyone
• Rating for the risqué