There are just too many good things out there to name them all.
In my two 3.5e Greyhawk campaigns I've run relatively recently:
-- Buckbray Tower (Dark Furies) -- I set in a riverside baronetcy along the Fals River in Bissel
-- Tower of the Last Baron (Paizo) -- I set it on the Bissel/Ket border, near the High Pass that leads to the Lost Caverns of Tsojcanth. (My campaign has a war between Ket and Bissel, but not destruction of Bissel -- I don't buy into all the 2nd Edition changes to Greyhawk.)
-- Forge of Fury (WOTC) -- I set it the Yatil Mountains, up hill from Falwur, Bissel
-- Speaker in Dreams (WOTC) -- I set it in Falwur, Bissel
-- Shackled City Adventure Path (Paizo) -- I'm using the official setting of the City of Cauldron, in the jungles south of the Hold of Sea Princes. My Hold fits the official version in Living Greyhawk (3e), and I added the detail that Cauldron and Sasserine were secret colonies of the Hold, with a similar slavery-based tropical society, and won independence when the Scarlet Brotherhood conquered the Hold.
They are all good adventures, IMHO, or of course I wouldn't have run them.