[Claudius]

Appraise - lowers prices...good but not essential.
Bluff, Diplomacy, Intimidate - important skills you want some but not all
Concentration - Casters a must
Disable Device, Open Lock, Search - Rogues who don't like Neeshka in party
Heal - Pretty useless but not totally
Hide - sneakers and HIPS
Move Silently - ditto
Listen - detect sneaking rogues...when does this happen?
Spot - ditto and ALSO stops feint attempts against you important for PVP
Parry - pretty passive fighting style maybe for duelists?
Perform - needed for bard songs and curses
Crafting - have companions do this
Set trap - pretty decent if you get off on this. Especially good to paralyze.
Sleight of Hand - earn a few gp but pretty useless.
Spellcraft - VERY good. Every 5 ranks give +1 save vs. spells.
Survival - Used with Track feat (ranger)
Taunt - Good. Drop opponents AC in area of effect.
Tumble - Good. Avoid attacks of opportunity. Plus Every 10 ranks earns 1 dodge AC.
Use Magic Device - Very good. Use items without restrictions. Including other class/alignment items. Doesn't allow non-proficient weapon use.