I love paper piecing. You didn't specify free patterns or not, but
http://www.paperpanache.com/index.htm has free and purchase, Quilter's Cache also has a ton of free patterns, a lot of which are paper pieced, there's a lot of free paper piecing patterns out there, you can also Google free paper piece quilt blocks and get a lot of hits. Carol Doak is another one that has a lot of paper pieced patterns, some of which are free.