What do people think of this - using a syringe. I have got a big enough syringe to do it in one go. And the caliper in the air "trick"
http://www.youtube.com/watch?v=jiWnc4fNGCo
Del boy is the right title
This isn't a good idea as you will aerate the fluid with microscopic bubbles, which will eventually form into lager air bubbles and you'll have a spongy break, and have to do it all over again.
Push the pistons right back into the caliper, fill the master cylinder reservoir, open the rear bleed nipple wait for the fluid to drain out, close it, open front, repeat as for the rear, all the time keeping the reservoir topped. Sometimes you have to pump the peddle a few times, do it slowly. Now bleed as normal from the back nipple, job done.
The rears are normally very easy to bleed.