Power Lunge( Ghostwalk, p. 37)
[Fighter Bonus Feat, General]
Your ferocious attack may catch an opponent unprepared.
Power Attack (PH) , Base attack bonus +3,
A successful attack roll during a charge allows you to add double your normal Strength modifier to the attack's damage, regardless of whether you're using one- or two-handed weapons. You provoke an attack of opportunity from the opponent you charged.