Good Product Developer Interview Questions

What’s your favourite programming language?
If you could add one feature to programming language <x>, what would it be?
Describe the project you most enjoyed working on?
What is the largest project you have been a part of?
Describe a project where your deadlines started to slip, how did you handle the situation?
Whats the biggest mistake you’ve ever made?
What was your worst job?
What was your best job?
Describe your current development process?
Describe your preferred development process?
How do resolve technical issues that are related to; a bug, an R&D issue, a lack of knowledge?
How do you deal with difficult peers?
What makes you as good as you are?
Who is the best person you ever worked with?
Who is the worst person you ever worked with?
What would you do different in your next project?
Do you want to follow a technical or a management development path?
Have you ever written a technical paper?