The Gaming Den

Fire Mage:
The Fire Mage and his allies are immune to the effects of Piercing Flames.
Bonds of Fire has a range of short (oversight).
Fire Burst damage is 1d6 per level (probably an oversight).
Ignite has a Reflex save of 10+half character level+cha modifier to extinguish.
Hand of Fire is a swift action to activate and deactivate.
With Visions of Fire the Fire Mages vision can no longer be obscured by smoke or fire.

Samurai:
Kiai! costs more charges depending on the weapon you are using. A x2 critical modifier weapon uses only 1 charge per use while a x4 modifier weapon uses three charges per use.

Thief Acrobat:
The Thief Acrobat gets a bonus feat at level 3 and another one every 5 levels after that.
Acrobatic Flair allows the character to use Dex instead of Str for all Jump, Climb and Swim checks in addition to its other benefits.
The class has full BAB.

Wilder:
Psychic Enervation functions differently. Instead of getting dazed and losing power points, should psychic enervation strike you instead take a number of d8 damage equal to the Wild Surge boost.
Elude touch applies a dodge bonus against all attacks.
Surging euphoria is gained at level 2 and improves every 4 levels afterward.
Volatile Mind is removed, instead at those levels you gain Expanded Knowledge as a bonus feat (Educated Wilder).
The Wilder gains powers in the same way as the psion (a new level of powers every two levels). Powers known are one at level 1, two at level 2 and then an extra power known every two levels afterward.
The wilder gets a psicrystal at level one.
The class grants Painful Euphoria feature at level 10 which allows the wilder to gain the benefits of surging euphoria even if he was struck by psychic enervation.