Rolled a Troll Druid to check out some of the new zones and had an absolute blast.  Almost tempted to make an Undead Hunter just to check out some of the Silverpine areas as well.  Then I get to Outlands on the druid... and now I'm bored. 
 
I don't know what it is about BC content that I hate so much that it bores me half to death compared to the rest of the questing in WoW.