This list only contains the books I've read for fun lately that I actually liked.  I recommend that you read them all :)

• TCP/IP Illustrated Volume I, II and III  by W. Richard Stevens (2005)
  
  
• Joel on Software: And on Diverse and Occasionally Related Matters That Will Prove of Interest to Software Developers, Designers, and Managers, and to Those Who, Whether by Good Fortune or Ill Luck, Work with Them in Some Capacity By Joel Spolsky (2005)
  
  
• Harry Potter and the Half Blood Prince by J. K. Rowling (2005)
  
  
• Indroduction to Microsoft WinFX (2005)
  
  
• Visual Studio Hacks (2005)
  
  
• Seven Habits Of Highly Effective People by Stephen R. Covey Code(2004)
  
  
• The Hidden Language of Computer Hardware and Software by Charles Petzold (2004)
  
  
• Code Complete by Steve McConnell(2004)
  
  
• OpenSSL Network Security by Vigal, Messier & Chandra (2004)
  
  
• HTTP The Definitive Guide by David Gourley and Brian Totty (2004)
  
  
• The Riemann Hypothesis - The Greatest Unsolved Problem In Mathematics by Karl Sabbagh (2004)
  
  
• Harry Potter and the Order of the Phoenix by J. K. Rowling (2003) 
  
  
• Harry Potter and the Goblet of Fire by J. K. Rowling (2003)
  
  
• Harry Potter and the Prisoner of Azkaban by J. K. Rowling (2003)
  
  
• Harry Potter and the Chamber of Secrets by J.K. Rowling (2003)
  
  
• Harry Potter and the Sorcerer's Stone by J.K. Rowling (2003)
  
  
• Frameshift by Robert J. Sawyer (2003)
  
  
• Lord of the Rings - The Return of the King by J. R. R. Tolkien (2003)
  
  
• Lord of the Rings - The Two Towers by J. R. R. Tolkien (2003)
  
  
• Lord of the Rings - The Fellowship of the Ring by J. R. R. Tolkien (2003)