I was a Monte Bard in one of those "You're a Super Hero each questing on behalf of your homeland, here is a million GP" campaigns, and had a pretty high Charisma score. I basically destroyed everything set before me, I was dealing about 100-150 damage a round. I know, you have a billion characters who do 3 times that much as a half-move action, but we're new to D&D and that was pretty effing impressive. I rolled some criticals and a lot of 3s and 4s on my Sonic Darts and Songstrikes and took out 2 Horned Devils, then rolled a boatload of 4s on a weaved, Crescendoed Sonic Blast and Ko'd a Lich. Everybody's jaw just kind of dropped. Afterwards we met the big baddy that had been plaguing the group, a Half-Ogre War Hulk, and I weaved a Sostenutoed Disrupt Thoughts on him. Paralyzed him for 36 rounds!
I had to make a new guy after that.
Phil was amused when I showed him a Master Transmogrifist that could turn into an Octopus, then slapping on Hydra heads and hasting myself to do about 30 attacks, and taking Power Attack for Power Lunge. I'm a Wild Mage now, Till Eulenspiegel
I don't really have a "worst moment.