Since the content has passed.... the battle at The Wall after Ygritte nails John with some arrows.
Book vs Show.... I enjoyed the show version way more lol... in the book John takes one arrow to the leg and hes injured for the entire battle.
Also in the book he just kinda finds Ygritte's dead body and hes kinda sad and buries it and then the story moves along.
The show does a good job at times of kinda throwing away some of Martin's boring dead-end stuff and also making some parts more interesting/exciting like the battle at The Wall.
I have not read books 4/5 yet, im at the end of book 3.... but if our reading folks are correct, the show is cutting out a decent amount of boring book junk which ima have to wade through.