I love freezer paper piecing. It irons on and you don't sew through it, so you can use normal stitch length and simply peel it off afterwards. There's a great tutorial here:
http://www.twiddletails.com/store/in...age=page&id=21
Freezer paper piecing is the method Judy Mathieson now recommends in her book Mariner's Compass - Setting a New Course. One difference to the tute above: she stacks several pieces of freezer paper and sews through them with her machine with an unthreaded needle. The perforation does the same thing as making creases as in the tute, except you catch several layers at once.
I tried traditional foundation piecing (the one with sewing through the paper) once. Hated it. With a passion.
Little pieces to pick out between seams in every sharp point; the foundation coming apart every time I needed to take out a seam... well it tears easily, that's the point isn't it... but for me at least it didn't hold up when I used my seam ripper.