Accuracy and Critical Chance?

[Gwazi Magnum]

Just wondering in terms of Martial Classes what do you guys find are the best (non-chessy) ways to have a high attack rating and chance of critical hit (which is an automatic hit, critical or not).

[CaladanMoonblad]

Rapier/Falchion/Scimitar + Keen gets the crit range to 15-20. : / No feats required, just 8,3XX gp required.

Anything that adds a +bonus to attack will help to confirm, so standard Weapon Focus and Bard/Wizard/Cleric buffs via Heroism, Bless/Aid, etc.

[Gwazi Magnum]

Is there anything above that though that can contribute to a higher critical hit chance?

[Slipperychicken]

Is there anything above that though that can contribute to a higher critical hit chance?

Disciple of Disapater PrC doubles, then triples the threat range for metal weapons.

[TuggyNE]

Just wondering in terms of Martial Classes what do you guys find are the best (non-chessy) ways to have a high attack rating and chance of critical hit (which is an automatic hit, critical or not).

Not all critical threats are automatic hits; only natural 20s qualify.

As far as ideas, a somewhat dubious reading of the (3.0, unmodified, dependent-on-3.0-critical-range-stacking) Disciple of Dispater PrC would allow this; Kaorti resin weapons increase crit multipliers, but require the involvement of evil creatures from beyond reality.

Power Critical feat makes confirmation more likely.

Attack bonus is mostly just getting a lot of Str, greater magic weapon/+X weapons, and miscellaneous bonuses like Inspire Courage, pale green ioun stone, and maybe Weapon Focus. (There are lots of others, of course.)

[Urpriest]

IIRC, the only thing that unambiguously stacks with Keen is the 7th level ability of the Streetfighter Barbarian.

Edit: For attack bonus, the Heroism line are very snazzy.

[Gwazi Magnum]

Seems Critical Hits won't work the way I was hoping then so I'll need to go for a different approach. Thanks for the help though guys.