i believe me and a group of friends are going to run heroic instances, Kara, ZA, SSC, Tk, BT, etc. etc. until the server calms down. considering that all the mobs in those runs are 70 and above, we figure we could easily continue to level as fast as the masses are by staying in the heroics.
i also made sure than when i hit the BC area on all my toons, i played with full rested. this allowed me to hit 70 and still have 2 entire zones to do questing in. so if i am unable to find a group for heroics or whatnot, i can always do questing in SMV or netherstorm.
on our server last night, there was some "event" in Stormwind (LOL) that was lag city. and it wasnt just me complaining about it, trade ch. was going nuts over the lag. basically, it was totally unplayable.