The Age of Worms: Still running this epic saga. I'm loving it, the players are loving it, its just good, brutal, undead-smashing fun as the players race to prevent Armageddon. Long shall Hall of Harsh Reflections be remembered, my players still all quake when the rogue says "I'll make a spirited attempt".
Steel Shadows: I've run and played in a lot of Eberron adventures, and this is still one of my favourites. My players were horrified when the identity of the killer was at last revealed, and were on the verge of flipping the table when their bosses at House Cannith screwed them to the wall. Plus, Dandy was such a fun character.
Chimes at Midnight/Quoth The Raven: Hell hath no fury like a narccisist scorned. The first one was a gloriously over the top pulpy revenge romp. The second was a freaky, twisted and downright nasty thriller. I'm salivating for the finale, and my players are champing at the bit to do horrible things to Victor (IN)Sain(E)t Germain.
The Sins of Ages Past: A series of Living Greyhawk adventures, that take us in to the truths about the Flight of Fiends, and how it was betrayed. A small boy, a VERY pissed of Devil Prince, the Crook of Rao and a curse that's become legend amongst LG players all add up to one damned fine saga.