I have (and read) all the books, think the tv show was a pretty good job (so well cast and acted! Though I was momentarily confused as all the kids were older) but as with tv shows I wandered off after a little while (actually got bored with the amount of sex). From memory Joffrey was a little shit because he was a spoilt entitled brat but I would have to reread them all to be sure. Actually I will probably have to reread them all if the next book comes out/I get it if it's already out because there's such massive gaps between them.