What Do Instance Bosses Do When The World Has Moved On?

So what do all those old raid bosses do now that The Burning Crusade has come out and the game world has moved on? Do they hang around trying to pick up Blood Elf chicks like Matthew McConaughey in Dazed and Confused? WoWInsider comes up with some uses for all that old content now that shiny, new content has come out.