And before Libris Mortis came out, I wrote the Stone Behemoth template for Counter Collection: Undead.
Plus several cool undead, like the Chilling Bones (undead that is the center of a snowstorm), Forsaken Slain (barbarians that weren't picked for Valhalla), Pyre Archer (archer who used too many incendiary arrows when alive), Netherlord (the martial version of the lich), Lingering Arcane (spellcasters who weren't quite lich material), Spirit of Despair (amorphous depression incarnate) and the Plague Zombie (spreads zombieness with a bite).