Viable critical miss system...

[Hannibal Barca]

Can anyone point to a good critical miss system?

 

[hong]

Versions I've seen posted:

1) On a natural 1, make another attack roll; if it's a miss, then you slip up and don't get to take an action next round.

2) Same as 1), but instead of missing an action, you provoke an AoO.

 

[AuraSeer]

There's another thread on this subject here:
http://enworld.cyberstreet.com/showthread.php?s=&threadid=36420