Equipment|Garrote (Song and Silence)|Can't use Death Attack, requires grapple on classes that are terrible at grappling|2|15|3.5
PrC|Blighter (CDiv)|Have Speak With Dead Animal, but no way to actually communicate with animals lacking a language (all of them, in short)|2|16|3.5
Combat|Grapple|Helpless creatures don't auto-fail grapple checks|2|16|3.PF
Monster|Earth elemental (MM)|No tremorsense, so blind while earth gliding|2|16|3.5
Monster|Desmoderu Hunting Bat/War Bat (MMII)|Blindsense, and no other vision mode, so total concealment against all targets in the dark|2|16|3.5
Monster|Amethyst Dragon (MMII)|Bonus on saving throws against force effects; listed example doesn't allow save|2|16|3.5
Monster|Zombie (MM)|After an active zombie has rotted long enough, it appears to be a skeleton, but retains its own stats|2|17|3.PF
PrC|Totem Rager|Grants literacy|2|17|3.5
Spell|Anger of the Noonday Sun|Targets sighted creatures, but has rules for affecting oozes/fungi|2|17|3.5
Spell|Bestow Greater Curse|Transmutation, instead of Necromancy|2|17|3.5
Equipment|Stone Salve (DMG)|Has flesh to stone prerequisite, despite reversing the process|2|18|3.5
Combat|Bullrush|Large creature rushing a line of medium must fit into two squares, but can't|2|18|3.5
Monster|Glaistig|Can't move more than 100' from pool, but has LA|2|19|3.5
Monster|Vivacious creatures|If aura suppressed, 1 Str damage/round, but has no Str score|2|19|3.5
PrC|Chaotician (PlH)|Babble 1/day with no listed duration|2|20|3.5
PrC|Sand Shaper|Can make items in negative time|2|20|3.5
Monster|Cat|No ranks in Tumble, so accidental falls will usually kill them|2|20|3.PF
Race|Elf|Immune to ghoul's touch, but not ghoul touch|2|20|3.PF
Also, the bit about elephants being good at jumping is apparently belied by a line in the MM about them specifically being bad at jumping.
Post those in the other thread, eh?