What d20 products do you think are truly the best?

[EarthsShadow]

Cool. For me, I would have to say my favorites include:

Monsternomicon - a truly sweet book that offers so much, its a shame that the monster manuals don't follow this formula and format for success.

Both Relics & Rituals books - really cool, if a bit overpowered.

Call of Cthulu 3e - modern horror, sanity points, overkill god-like monsters, psychological methods of terminating player characters, and just a good all round fun game to play.

Wheel of Time - this is just a good game, and this is what D&D should be translated to, IMO.

Star Wars Revised - this one gets the capture and feel of the star wars legacy, the first book did not.

and I will have to list the Book of Vile Darkness and Kalamar's Villian Design Handbook and both really good, and combined they make making villians a truely wonderful experience to kill...err... I mean, challenge the player's with.

 

[Hopping Vampire]

Book of Eldritch Might 1 and 2
Everquest (not really d20, but close enough; 350 full color pages for 30 bucks, one of the best deals out there)
PHB
Rokugan
Monsternomicon
Kalamar
The Longest Night

 

[Rain]

The Forgotten Realms campaign setting - I just love everything about FR, wish there were more high-magic campaigns around.

Wheel of Time - a Nice rpg, and a great book for fans of the novels...

Call of Cthulhu - Really nice book, i think it pushes the limits to what kind of games can be converted to d20.

 

[Tyler Do'Urden]

Da coolest stuff, in no particular order:

Star Wars Revised Edition- I'll second this- no Star Wars RPG to date captures the action of the movies as well as the new Revised one. In addition, it's an absolutely beautiful, self-contained book.

Wheel of Time- another excellent, self-contained book- with an innovative magic system to boot.

Oriental Adventures- Great book.

Swashbuckling Adventures- Spotty in places, but a tremendously handy sourcebook in general. Good stuff.

Book of Vile Darkness- I just picked it up yesterday- it looks like another winner from Monte Cook. He just keeps cranking out great stuff- I can't wait to see what he's going to do next!

 

[Nightfall]

Both Relics & Rituals books - really cool, if a bit overpowered.

Any reason you say overpowered? (I'll admit there are a few spells in both that could use a tad fixing, like FLame bolt and Stone Missiles.)

 

[Bendris Noulg]

Relics & Rituals remains my top pick, followed by Arms & Armor, and then the Eldritch Might books. I've also warmed up to AEG's Mercenaries pretty well, too.

Green Ronin is also quickly gaining my appreciation. I have Shaman, Assassin, Secret Colledge of Necromancy and Hammer and Helm, all of which are just excellent sources.

Atlas also did a major climb recently with Nyambe, which I've waited like a year for. Occult Lore is rather well done as well.

MEG and Mongoose also rank high with me, although MEG's flavor makes some stuff hard to adapt and Mongoose often needs as much tweaking as the Core material to match my sense of balance.

SW I'm so-so with, but I think it's because I have little interest in playing Star Wars (the W&V thing really helps low-magic games, though, since it removes the dependancy on Clerics enforced by Hit Points). Call of Cthulu and Wheel of Time remain excellent games, though.

 

[MeepoTheMighty]

Oathbound: Domains of the Forge by Bastion Press. Really people, if you don't have it yet, go out and buy it. Its worth every penny. It really is a cool and unique setting with awesome art and cool locations to explore.

I would, but I still haven't seen it anywhere

 

[Christian Walker]

Counter Collections from FDP
You can never have too many counters.

Dragon
Lots of good ideas to mine.

Dungeon
Craploads of stat blocks to pilfer.

Scrollworks
I publish it, so I guess I better use it!

Traps and Treachery
I like the skills and Thug NPC class.

 

[SeaJay]

I really have no idea what is BEST, but I'll list my favourites:

Wheel of Time: Slick, well done, great art, excellent mechanics. Love the magic system. Something like this should be standard D&D.

Is Wheel of Time 3.5, and didn't it have an insane amount of errata?

If yes to the first and no to the second, I have just found my default setting to GM

 

[Dioltach]

Hands down my favourite d20 product: D20 Modern.

But I also quite like the Eberon Campaign Setting, Secrets of Xendric and Ptolus.