@Drammor: That's cool, so it'll detect Clerics, Paladins, Favored Souls, Undead(?) and Outsiders(?), but not level X characters, right? And overwhelming auras don't depend on either party's alignment; if they're twice the Detector's ECL, and their aura is overwhelming, then the Detector is at risk of being stunned (obviously not when undead, but for clarity).
@Maelphaxerazz: Thanks, most of my paladins already have Know Greatest Enemy, but if some of my Cohorts aren't taking Leadership, and so won't qualify for L(ord/ady) of the Dead, then they might take levels of Blackguard on the PrC/LA Side. BG's don't have much in the way of ACF's, and I wanted to know what I'd get outta of using Detect Good. It appears that the words 'good', 'evil', 'lawful', 'cHa0t1k' and 'alignment' are excised from the rules and the rest of the rules surrounding them are pressed gently together to see if they make enough sense.
[Edit] Since the Tressym (LEoF 191) are +0 LA (Cohort), and intelligent to boot, I'm trying to find a way for Magical Beasts to qualify for a cheap Undead template so that they can replace the Anthropomorphic Ravens as warlock mooks. Any ideas? (Necropolitan needs Humanoids and Monstr. Hum., and Bone Creature (BoVD) is unupdated, so no LA listed, and Corpse Creature (also BoVD) is also Unupdated)