Hilarious things you've found in RAW?

[Inevitability]

Note: while usually "Turn"=="Good" and "Rebuke"=="Evil", in some cases alignment just don't matter

Examples:
Bone Talisman is not a [Good] spell
Kin Mastery feat (Dragon #305) allow you to chose Turn or Rebuke; choice is 1-time, but otherwise - free (and not depends on alignment)
Lumi (Monster Manual III) clerics are always turning undead - regardless of their alignment
Rebuking Breath (Spell Compendium) is not an [Evil] spell
The "Aztec Mythos IV" article (Dragon #358) includes NE deity of the Sun, whose Clerics are always channeling Positive Energy - regardless of their alignment
Xag-Ya turning undead - despite being always Neutral

An Evil Mystic with the Sun domain will also be able to use Turn Undead, and a Death Delver can be Good and gets Rebuke Undead.