Hard say. My former favorite, my Hollowfaust campaign, is defunct or at least inactive until two/three of my players can get their connection stuff and times sorted out. My present favorite is kind of a tie between the two Scarred Lands campaigns.
Name: Journey to the Isle of Maddening Dread and the Legend of the Windwalker, Vash Sepphos.
Setting: Scarred Lands
Level: 13th
Description: The Isle of Maddening Dread is a place of great peril. Well before the war between gods and titans came to ahead, there was a powerful wizard that made a pact with a Demon Prince of some repute. (Think the guy's name was Orcus...

) Garrick, called the Skull Emperor, consigned thousands to their deaths in his mad bid for power. The forces of the Ledean Empire as well as the Coventale drew against him. Garrick fled to a remote isle and in act of desperation, tried to bring his lord fully into this world. Unfortunately before the vile ritual could be completed, one of the titans, (Mesos or Mormo, no one is quite sure) banished Garrick and the isle's inhabitants to linger between the worlds. Thus always moving and changing, Garrick, the Skull Emperor remained...until the Divine War, when two of dark champions of both sides, one of Mormo, one of Chardun came to the Isle, hoping to claim some of that power for themselves. Unfortunately they along with a regenade firewrack dragon, the very first and paragon of his kind, were trapped there. So they remained...until now. Now, the Isle wards are breaking down...and quick possibly the Isle will remain HERE in the Scarred Lands. Summoned by the archmage and Sage of both Shelzar and the Scarred Lands, Bl'ayne Nightfall, this intrepid band may yet find themselves on the road to becoming true legends...or the road to death and damnation. Only these brave souls remain to possibly challenge this threat; Rurik Tolrune, a mountain dwarf that's a loner, a bit savage but a great fighter. Next is the dwarven cleric of Corean, Sigeon Ral'shruik, who follows in the paths of the saints of Light, the Knights of the Pale. He hopes to prove his worth as the others of his kind did before in the Divine War. Lathenih, a female half elf from Termana. A mercenary, she is a passionate soul...whose destiny might yet be key for all them. A human known only as Junk, he's a skilled mercenarcy trapmaster. Eggarmord Demenser, a skilled abjurer and former head of one Calastia's schools of Battlemage, he's also a little nuts, believing he has found a way to "save" arcane magic and purify it for himself. And finally, a legend in his own right, Vash "The Windwalker" Sepphos. A wanted man by Calastian authorities, he is the stuff of legends. A man that will not kill, not even for his own life. He is still the best shot with bow, and considered by many to be, even for an elf, inhumanly quick. The Windwalker...a man with a troubled soul...searching for peace and love in a world that has little of it left.