"10. Comments that explain the "how" but not the "why"; 9. Interruptions; 8. Scope creep; 7. Management that doesn’t understand programming; 6. Documenting our applications; 5. Applications without documentation; 4. Hardware; 3. Vagueness; 2. Other programmers; and 1. Their own code, 6 months later." - imabonehead from Bookmarklet