Phew, hard to say. Tyrion of course, everyone likes Tyrion.

I also like Catelyn, Davos, Stannis, and Arya. Daenerys is cool, too. And I somewhat like Melisandre. Thoros and Dondarrion have disappointed me a bit in the show, though I really like those characters in the books. I'm also beginning to like the show's version of Margaery, at least it's better than in the books.

Also, the actors of both Joffrey and Ramsay are absolutely brilliant in the show. One really loves to hate these characters. Playing monsters is not an easy job and you need a really good actor to do it properly, but both of them do it really well (although we haven't seen that much of Ramsay yet). Also, I think they're very different kinds of monsters. Ramsay is smart and knows exactly what he is. Joffrey on the other hand is vicious, but also an idiot. It really makes you wonder who of the two would be more dangerous in the long run.

Anyone else? Oh yeah, Littlefinger. That speech at the end of "The Climb"? Just brilliant.