I just read an awesome SGA story posted for the Second Verse challenge on SGA Flashfic:
Games of Chance, by xparrot. Gen, Rodney McKay. (ca. 12,000 words)
It's a great take on precognition/multiple universes/timetravel in the SG universe, and I loved the frantic, desperate pace of it. I was slightly confused at the beginning, but that turned out to be a very deliberate story telling choice, because it starts right in the action, and it all came together in a very cool plot.