Skills
Spell Reflect will reflect or negate most single-target spells. It will reflect the single target aspect of some spell volleys, such as Shadowbolt Volley. It will not reflect most pure AOE skills, such as Frost Nova.
Commanding Shout and Battle Shout cannot be stacked by a single Warrior. Having two Warriors in a group will maximize that group’s efficiency in a raid setting.
Arms
Improved Heroic Strike represents a 20% increase in Rage efficiency. This stacks with Focused Rage for a 40% increase in Rage efficiency.
Iron Will is additive to the Orc Racial and will allow 40% Stun Resist.
Improved Thunderclap represents a 20% decrease in Attack Speed. This equates to a 20% reduction in normal attack damage, but does not affect special abilities.
Improved Intercept greatly increases the chance that you will intercept in the wrong direction, confusing your enemies.
Fury
Booming Voice does not increase threat values for the affected Shouts.
Cruelty does not represent a 5% increase in overall Threat.
Improved Demoralizing Shout is not effective past 2 talent points for Burning Crusade bosses. However, if Curse of Recklessness is present on the target, 5/5 Improved Demoralizing Shout is necessary to negate the additional Attack Power.
Dual-Wield Specialization does not increase Shield Slam damage.
Weapon Mastery represents a 50% reduction in duration when disarmed. It also increases Chance to hit by eliminating 2% Dodge from the Combat Table.
Improved Berserker Rage instantly creates as much rage as Anger Management over the course of 30 seconds.
Protection
Improved Bloodrage will generate enough rage on pulling to land a Shield Slam immediately.
Tactical Mastery will allow you to Intercept and Pummel when changing stances. Since Intercept stun works on most creatures, this is only effective on interruptible raid mobs.
Anticipation represents a 0.8% increase Block, Dodge, Parry, Chance to be missed and a 0.8% reduction in Critical Hits. This is a cumulative 4%.
Toughness will allow you to live 10% longer while tanking. Percentage increases in Armor have a curved relation to Damage Reduction; they have a linear relation to life expectancy.
Improved Shield Block allows your Shield Block ability to last through the duration of the cooldown. It also is critical in reducing the number of Crushing Blows while raid tanking.
Improved Sunder Armor represents a 20% increase in Rage efficiency for both Sunder Armor and Devastate. This stacks with Focused Rage for a 40% increase in Rage efficiency for these abilities.
Shield Mastery increases Shield Block Value, which increases Shield Slam damage.
One-Handed Specialization increases Shield Slam damage by 10%.
Shield Slam can dispel magic shields on some classes. If the shield is dispelled, the Shield Slam deals full damage to the target, as if the shield had been inactive when the player was struck.
Focused Rage has a major impact on most abilities. With Focused Rage and Improved Heroic and Improved Sunder, Revenge will cost 2 Rage, Heroic Strike, Sunder Armor and Devastate will cost 9 Rage.