Hearthpwn

I actually didn't keep track of how many bosses I defeated before completing my first run with each class.   Although I did record how many runs it took me until I got my first 8-win run.  I've also kept track of how many total runs I've done so far with each class, and how many 8-win runs I have.

Druid:  Took me 5 runs to get get my first 8-win run; (Right now, after 25 runs, I've completed it just that 1 time).

Hunter:  16 runs (25 runs, 3 complete).

Mage:  6 runs (25 runs, 3 complete).

Paladin:  1st attempt (25 runs, 5 complete).

Priest:  27 runs...LOL (28 runs, only 1 complete).

Rogue:  3 runs (25 runs, 3 complete).

Shaman:  23 runs...ouch (25 runs, 1 complete).

Warlock:  11 runs (26 runs, 1 complete).

Warrior:  14 runs (25 runs, 1 complete).