http://quilting.about.com/od/foundationpiecing/ss/log_cabin_block_4.htm
log cabin
http://www.freequilt.com/piecing.html various blocks
http://www.planetpatchwork.com/fndpiece.htm several 6" patterns
http://www.quickquilts.com/pbp/ pretty tree pattern, swirl log cabin, etc
click free patterns and projects at http://www.quickquilts.com/pbp/ for bowtie, stars, etc.
Cool Sampler blocks at http://www.quiltmaker.com/patterns/patt7/
Hope this is helpful to you. I have other patterns, too if you're interested. Just let me know what types you like best other than the piecing....I'm afraid I haven't spent much time saving piecing sites but if you use a search engine for free foundation piecing you should get some good results. Happy Sewing!! :D