Pi Day Puzzle by Frank Virzi (down only)

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Across
  1. 3. Morales of "NYPD Blue"
  2. 5. "Back ___ hour": store sign (2 words)
  3. 6. Colorado skiing mecca
  4. 7. Runner's number on their stomach
  5. 11. 'Dragnet'' force: Abbr.
  6. 12. Sandwich breads
  7. 14. Circumference/diameter ratio calculated in the States? (2 words)
  8. 16. "Gone With the Wind" plantation
  9. 17. Circumference/diameter ratio calculated by an igloo dweller? (2 words)
  10. 19. first word of a written letter
  11. 20. piano technician
  12. 22. Like some turkey meat
Down
  1. 1. Rigatoni/Spaghetti
  2. 2. C/d ratio of a dessert with fluffy topping? (3 words)
  3. 4. "Okay if ___ myself out?" (2 words)
  4. 8. Noisy ruckus
  5. 9. Spanish Hero El ______
  6. 10. ICU workers
  7. 11. hard shot on the diamond
  8. 12. Pro ____(proportionally)
  9. 13. wooly momma
  10. 15. 2008 Super Bowl MVP Manning
  11. 18. You do this to dishes (with soap) when there are things stuck on the pan
  12. 19. spreadsheet content (statistics)
  13. 20. uncle in Spanish
  14. 21. College e-mail address ending