All right, I have to recommend two books here: One is AEG's
GOOD, which not only has The Paladine, a Paladin built as a Prestige Class. It also has two alternate Core Paladins, the Chaotic Good Avenger and the Neutral Good Defender. The Avengers are more focused on "hunting down and slaying Evil" then the Paladins, and the Defenders are more seriously devoted to protecting the innocent.
The Book also has an excellent first chapter which explores the three flavors of Good, CG, LG and NG. I highly recommend it.
The other book I highly recommend is Mongoose Publishing's
The Quintessential Paladin, which explores all the possibilities of the Paladin Core Class, and really helps one get a good idea of just what it means to be a Paladin. The chapter on Codes of Honor alone makes the book worth it, as it gives players and DMs the option of building a customized code based on sample tenets of honor. So if you're a DM seeking to build a standard code, you can do that, and if you're a Player seeking to build a custom code, you can do that too.
As for how I see the Paladin, it's simple: The Fighter Fights and Kills. The Cleric serves her deity. Those are their
raison d'être. The Paladin, on the other hand, is defined by his alignment, which is always Good. He's a Hero, first and Foremost. He protects the innocent against Evil, brings Law to areas that know no peace, and upholds Justice as the highest ideal.
Beyond that basic idea, a Paladin could be a big number of things: a peace-loving idealist who only draws his sword when words fail to end a conflict, a crusading lawman who travels with a sword in one hand and a lawbook in the other, a dark avenger who seeks to find the one responsible for the loss of his loved ones to deliver some retribution, etc.
Paladins aren't Holy Fighters or Combat-Specialised Clerics. They're not even a middle ground between the two. They're Crusading Heroes, making a stand for all that's Lawful and Good with fighting skills, strength of character and faith in their cause.
And that's why I love'em.
