Top 5 D&D Books

[Akrasia]

Good call, wait...I just agreed with Akrasia! *BOOM*

Mission accomplished.

 

[ColonelHardisson]

As per the first post, the core books are assumed:

* Unearthed Arcana
* DMGII
* MMII
* MMIII
* Fiend Folio

If I included non-D&D stuff, I'd drop the 3 monster books, and take:

* Iron Heroes
* Conan RPG
* Advanced Game Masters Guide

 

[Pants]

Since I'm an idiot and I don't read things, here's my Top D&D Books List Version 3.5:
1. Eberron CS
2. Monster Manual III
3. Monsternomicon
4. Expanded Psionics Handbook
5. Iron Kingdom's Character Guide
Honorable Mention: Iron Kingdom's World Guide