Whew... I realized today I've been raiding in Molten Core once or twice a week for over 9 months now.  That's a long time for me playing any game, much less one dungeon in one game.  The social aspect certainly helps keep it fresh, but the task of "mastering" the adventure with a good group of friends has been rewarding as well.  But I think I'm finally reaching the end of my journeys there, as we've basically refined it to a clean 4-hour clear (a long way from where we started) and I've personally gotten just about all the gear there I can reasonable expect to get.  Tonight I got my class-specific loot from the end boss of the dungeon, so I can hope to complete the gear at the next level of difficulty there.

I'm continually amazed that I'm still not bored with Warcraft.  They certainly make some decisions I don't always agree with but the core gameplay is just so darned fun.  Even pulling back from Molten Core, I'll probably just use that time to go explore other places in the high level WoW game...