Stephen King Actually, his stuff is kind of hit-and-miss. Some of it I love, some of it makes me wonder how the same person can write something so boring/stupid.
C. S. Lewis See comment for Stephen King. Although when Lewis is bad, he's just boring and doesn't make me mad.
Agatha Christie I think I've read all her novels, but I can't be sure because a)they've been published under so many different titles and b)I can never remember the titles anyway, just the plots.