In 1998, DC's JLA annuals were haunted by "GHOSTS", as the various JLA'ers were haunted by the dead from their pasts. (Note that by now, many of those "dead" have since returned.) I don't have most of these, but if the Green Lantern, Flash, and JLA Annuals I do have are any indication, it looks like the Bernie Wrightson covers were the best things about 'em.
Ignore that innacurate-but-excellent cover; Flash Annual #7 saw the Flash, haunted by the flickering, barely coherent speed force ghost of Johnny Quick. He finally has a heartwarming ghost-hug with Jessie Quick, but no point does Johnny become a zombie and attack Flash.
Green Lantern Annual#7 is a different story however, as Kyle Rayner finds himself meeting his fellow Green Lanterns for the first time, as hideous, undead revenants! You'll recall that in 1998, the Green Lantern Corps were still dead, Mogo was destroyed, and the Corps disbanded, leaving Kyle Rayner the sole Green Lantern. Nekron shows up, taking advantage of the supernatural forces behind the larger "Ghosts" storyline to elbow his way back into our universe, and sics the Lantern Corpses on Kyle, before being subdued. We'll be talking more about that guy soon.
No, the true force behind the haunting in the Annuals is revealed in JLA Annual #2. It turns out Felix Faust, in one of his many bids for immortality has awakened an ancient Egyptian wizard, Hermes Trismegistus, and angered him enough to cause all this mess with the ghosts.
All of this, indeed, all events in the story so far, is of secondary importance to the GHOST OF VIBE:
Yes, Paco Ramone returns, looking for his former team mate, Aquaman. The Ghost of Vibe is accompanied by eerie strains of old school electro Break dance music wherever he goes, and soon Ice, Steel, and other dead JLA members re-emerge as well. At the end, Vibe leads them to dog-pile on the evil-wizard-possessed Faust:
Five years earlier, in the 30th century, The Legion of Superheroes 43-48 (1993) saw a multi-issue saga that had the 30th century heroes caught in a struggle between Mordru and the White Witch. Mordru raised an army of the undead, among whom were such dead Earth heroes as Vigilante, the Justice Society, and Jason Todd:
As if that weren't bad enough, the Legion had racked up quite a body count by this time in this continuity, so eventually, all of the dead Legionaries showed up for a Live Legion versus Dead Legion showdown:
So yeah, DC has done the "Undead Heroes return" thing before, albeit never on the Scale of Blackest Night. It remains to be seen how Blackest Night turns out, but lets hope we at least get Black Lantern Vibe out of it, before we're through.