The Doctor for sure. Great cheesy villain lines delivered menacingly.
"A Moving ceremony, I'm sure!"
"Kill the Joes, kill ALL the Joes! Detonate the ICE PACK!"
Baroness was great when she was bad but all of her silly moments of weakness, flashbacks and ultimately when she flips sides, well that just made the character a bit of a disappointment and hard to really enjoy her character as a whole.