Heres a nice little tip that I for one will be using for power gaming to 80 in Wrath.
Its to reduce down time - its awesome in my opinion.
I give you ladies and gentleman :
Major Dreamless Sleep Potion - Thottbot: World of Warcraft
MAJOR DREAMLESS SLEEP POTION
Cheap as chips to make - great for reducing shit loads of down time, I'm going to be having 50 on me and 3 bags worth of them in my bank.
Just a tip =]