Uncanny Dodge

Barbarian cannot be caught flat-footed, does not
lose DEX bonus to AC if the attacker is invisible.
Still loses DEX bonus to AC if immobilized.
A barbarian with this ability can still lose DEX
bonus to AC if an opponent successfully uses the
feint action against him. If a barbarian already
has uncanny dodge from a different class,
automatic will gain improved uncanny dodge.