Slightly off-topic but still relevant - I have a technique for sashing that I really like. Sometimes it's hard to get the blocks lined up straight on the sashing, so I prefer to add sashing to each block. Instead of sewing long strips between each row, sew a border of sashing to each block. Here's a picture showing what I mean:
http://www.seamstobeyouandme.com/wor...06/Lynette.jpg