When I'm bored with Wow, (doesn't happen often thou since I always try to have goals);

1. Work on my Professions. I have a long way to go with Enchanting | Tailoring | Inscription | Alchemy | Blacksmithing
2. Ride around gathering herbs or mines. <---- (Give me some tunes and I will complete "zone out" for 3-4 hours. I'm always surprised by how many stacks I've gathered in that amount of time)
3. Do old world instances.