You can charge with wild abandon.
Prerequisite: Base attack bonus +1.
Benefit: When you charge, before making your attack roll, you may choose to take a –4 penalty to Armor Class until the start of your next turn to gain a +4 bonus on your attack roll.
Normal: Without this feat, a charging character gains a +2 bonus on his attack roll and a –2 penalty to Armor Class until the start of his next turn.
Special: A fighter can select Reckless Charge as one of his fighter bonus feats.
Source: Miniatures Handbook, page 27.