20. Read or reread 26 books.

COMPLETED 2005-06
I picked 26 as the number figuring one book every two weeks. Here's the list (I didn't count the specific books listed in The Fifty on their own):
(1) Being Perfect
(2) The Twelfth Card
(3) Cross Bones
(4) Harry Potter and the Half Blood Prince
(5) The Historian
(6) R Is for Ricochet
(7) The Egyptologist
(8) The Pythagorean Solution
(9) The Pegasus Secret
(10) Checkpoint
(11) Jonny Magic and the Card Shark Kids
(12) The Unlikely Spy
(13) Predator
(14) A Certain Slant of Light
(15) A Mind for Murder
(16) The Pale Horseman
(17) Prince of Fire
(18) Glamorous Disasters
(19) S Is for Silence
(20) The Labyrinth
(21) Crash Course
(22) Mitla Pass
(23) Snakes on a Plane
(24) The Magdalene Cypher
(25) Gone
(26) At Risk