When Prince Swagger got poisoned in season 3 or whatever, there was a hole in the show that was not filled until Uncle Viking showed up. Game of Thrones has some standout moments, but most of its characters sorely lack energy and enthusiasm. I swear to God if I see one more furrowed brow...
I didn't mind at all what he did to Theon because despite Theon's face turn later he was a piece of trash who sold his soul for a handful of magic beans. I was probably supposed to feel all horrified and disgusted. Instead I found it rather darkly amusing that he was Ramsay's little playmate.