top three technical skills

Recruiters keep asking me my top three technical skills. Let's see if I can figure it out -- here's an unordered list.

• Object-oriented design and programming
• Specification-oriented interface design and implementation
• Disciplined software engineering: checking for and reporting error conditions with useful error messages, meticulous use of version control, commitment to clean design
• Taking advantage of language and library features
• Tracking bugs and odd behavior to their source by reading code
• Finding, evaluating, learning, and using new tools: libraries, applications, utilities, books, tutorials, etc.
• 
  I don't think these will make much of an impression on recruiters, but I think a programmer would appreciate this list. Any suggestions?