A table of the frequencies of letters in a given language is quite handy for breaking simple substitution ciphers or for devising static Huffman coding tables. According to http://library.thinkquest.org/28005/flashed/thelab/cryptograms/frequency.shtml, the frequencies for the English language are approximately

  1. 7.3%
  2. 0.9%
  3. 3.0%
  4. 4.4%
  5. 13.0%
  6. 2.8%
  7. 1.6%
  8. 3.5%
  9. 7.4%
  10. 0.2%
  11. 0.3%
  12. 3.5%
  13. 2.5%
  14. 7.8%
  15. 7.4%
  16. 2.7%
  17. 0.3%
  18. 7.7%
  19. 6.3%
  20. 9.3%
  21. 2.7%
  22. 1.3%
  23. 1.6%
  24. 0.5%
  25. 1.9%
  26. 0.1%

This source gives "etnrioasdhlcfpumygwvbxkqjz" in descending order of frequency. "E.T.", "Sanrio", and "Internet" can be found within the most common letters.