I love Blood Oath - it's great seeing those three Klingons again, and having them team up is a stroke of genius. Jadzia feeling the bloodlust is a good continuation of Curzon's relationship with the Klingons, and is similar to what we have seen of Worf so far in TNG. It just touched all the right places for me to make it really enjoyable.
And have we finally made it through the dreck? Are we at the good end of the season? Does everyone still have their limbs and eyesight? I can't believe we made it!