I love seeing the quilting on the backing - on my OBW's I use muslin and a width of the original fabric (pieced) for the back and do something fun, funky, geometical or something intriguing that's going to make me want to flip that quilt to the back so I can see the quilting. I really really enjoy looking at all the different blocks - then the quilting on those, then the back... one of my favorite quilt patterns.