Felar:
-Resist Blow (manual)
-Strengthed by years of torture and abuse, a felar can prepare himself against an incoming attack
-causes the next physical attack to be fully absorbed

Wood Elf:
-Pathfinding (auto)
-self-explanatory. Inherent pathfinding

Orc:
-Enhance Disease *manual) (corny, yes)
-having a strong immune system, an orc can actually enhance the strength of whatever disease is in its system, causing it to become extremely infectious

Gnome:
-Inspect (manual)
-being the wisest race is Thera, gnomes are able to take notice to things others would easily overlook
--can either be used on PCs once everyday to try to determine certain things (alignment/affects). However even they are imperfect, and therefore so are their inspections
--or, can be used in a room to discover hidden exits/passageways/items (would get an echo, but nothing specific)

Duergar:
-Heightened Awareness (can't think of another name)
-from years of being in the Underdark and neigbors to Drow, Duergar have become accustomed to being snuck up on
-Duergar will be able to notice those sneaking around them
--can either be made manual, with the timer lasting longer than the actual affect (like blackjack)
--or made automatic, with a chance of failure

Dwarf:
-Loyalty (auto)
-a Dwarves loyalty to those of his race is unsurpassed, and the sight of a fellow Dwarf dying is said to invoke their rage
-if a Dwarf dies in the vicinity of another dwarf, he will be overcome with rage (berserklike affect)

-Repair Metal (manual)
-with their love and knowledge of metal, a dwarf is able to fully repair a damaged (dent/acid) piece of armor, granted it is made of metal

Cloud Giant
-Improved Eyesight (auto)
-Eyes conditioned to living high in the mountains, a Cloud Giant is able to see through the worst of weather
-Cloud Giants will receive no penalty on scan when the weather is cloudy. Minimal penalty when it is snowing/raining

Storm Giant/Fire Giant
-Familiar Terrain
-Being accustomed to water/fire, a Storm Giant/Fire Giant will feel at home while battling in this terrain
-When under water/in volcanes or burning areas, Storm Giants/Fire Giants will have improved combat ability (similiar to berserk)

Also, as a sidenote, I think that all inherents should be listed under the INHERENT helpfile, so that I don't have to copy and paste the MOTD to remember *smirk*