This is a must do.

I APPROVE THIS MESSAGE.

There is a critical threat table in the Dragon Compendium, but me and my group rarely use it except for when we want some changes. It is fun, specially if you combine it with a fumble table also included and double critical your partner. It has not yet happened, but speculations on the subject have been entertaining.

Still, we rarely use it.

Alacrity has had us in stitches at times with our critical and fumble rolls. He's pretty good at altering it based on the weapon and character in question, and we'd all have a laugh (if a fumble) or cheer (if a critical roll).

I still get teased about the time Vanadia fumbled a dagger throw and plugged the group's mage squarely between the shoulders. I think Alacrity insisted that backstab damage be applied and so our mage nearly died from "friendly fire".