I like the idea of an epic fail chart - not for when you roll a 1 in combat, but when a Pc does something so staggeringly stupid, you need to roll 1d20 to decide how to berate them for the attempt.
Or perhaps when you roll a 1for a skill check...
1-2 ) Everyone around you is incapacitated for 1 round with laughter
3-5 ) The nearest ally slaps you silly for 1d4 damage
6-10 ) Crickets
11-13 ) You waate the next 2d4 rounds explaining to your companions how sorry you are for the contemplated action
14-15 ) You are reduced to 1d6 inches in height (or so you believe)
16-17 ) You run home crying to mamma for the next 1d4 rounds
18-19 ) Your allies become invisible to you for 1d4 rounds
20 ) That was so awe-inspiringly stupid, it actually works - NOT