Well, we (against our will) helped to create a gate to the underworld/realm of devils (forgot the name of the plane), destroyed a moon, unleashed Kyber onto the plane of Law, extinguished the Silver Flame (opening a gate to the realm of demons in the process) and the session before last our druid destroyed Kord.(the city)
We are in possession of two artifacts ('staff of the profet', used to destroy Kord, and a dragon orb, used to extinguish the silver flame, in addition to a sword that was pulled from the silver flame.
Several of us have a partial Death Mark, two of us have a complete death mark, and our current plan is to go to Sharn and deal with the current leaders there because they keep sending bounty hunters after us.
Our warforged has managed to 'convince' the lord of blades to abandon his quest for warforged domination and settle for an independant warforged nation (or so we think), commonly referred to as 'the third path'.
Our Kalashtar psion has taken up the goal of creating as much chaos as possible, reasoning that where there is structure, the Quori have to control only the top few rulers, and thus lack of structure hinders the Quori domination of this plane.
My own character, a Dragonwrought Kobold Sorcerer Wizard Ultimate Magus is under influence from both a Geas from the temple of the silver flame and the dragon orb, switching between (Lawful) Good and (Lawful) Evil on a day-to-day basis, currently questing to become a Sacred Exorcist/Silver Pyromancer AND a Diabolist (depending on current state of mind).
We've just reached 12th level, some of us lagging a level behind.
I can't WAIT to see what we're doing at lvl 17+