Who am I?

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Across
  1. 1. Cheer for our team up north
  2. 6. Filler between Jerry and George reruns
  3. 7. Cheapest dog in town
  4. 8. Brian, Dennis, Carl, Al, and Mike
  5. 10. Where "everything" is "o"kay
  6. 11. 19-0 loser, familiarly
  7. 12. Shazam shouter
  8. 16. Lakers home, once
  9. 18. Uncommon (but real; you can vouch) birthplace
  10. 19. School named for O'Connor
Down
  1. 1. - no such thing as a free lunch (except when you see RU here)
  2. 2. Happy player who scored the winning run?
  3. 3. Partner of Lang
  4. 4. Divider of Twins
  5. 5. Pipe dream conveyance (for you)
  6. 8. Lakers home, once
  7. 9. Helped Mr. Grace in a pinch
  8. 13. The peach of your collection
  9. 14. Etc.
  10. 15. Half of hard-charging early-2000s Big10 duo
  11. 17. "You're the present 'neath my Christmas tree" crooner