The right book can make all the difference for literature circles. I certainly can't go out and buy the latest and greatest titles all the time, but our bookroom has a nice selection of titles. Some are newer, some are older. Here are some that my students are enjoying.
Frindle: A favorite of multiple groups! This book works well because it is engaging, and yet easy to read. Changing character emotions and attitudes are easy to see.
As groups have finished this, some have wanted to move on to other Andrew Clements books, like The School Story and The Report Card.
Tales of a Fourth Grade Nothing: I remember reading this in my elementary school days! But the group that chose it is still enjoying it, and some have even picked up the sequel on their own. I think that Fudge is just such a funny character that kids can't help but be pulled into the story.
Because of Winn-Dixie: This book can be a good pick for boys and girls. It has a quieter pace, and students in this group had a little more trouble finding the main problem and the theme. But they enjoyed all of the doggy details, and their conversations were always lively.
...and I've put together a collection of the materials that I've been using with literature circles. You can check it out below, or download it here.