I think when I was studying dream journals, it said to write down "anything" when you wake up in the morning. Your brain will finally get the message that it has to come with something, so it should start remembering dreams.

I tried to get stuff off of my dream journal computer... hard drives don't retain information for an entire decade.

... in my experience, at least, is to be woken up in the middle of them. For this, small children are ideal, but in the absence of those, it's possible to achieve the same effect electronically.

What you do is, you set yourself two or three alarms for utterly random times of the night. For best results, find an alarm that starts off quietly - the level of someone stirring in the next room - but after about a minute, ramps up to ear-shattering volume. After a week or two of dealing with those, you won't need the alarm any more - you'll wake up to every single sound in your house!

hS

Having to remember my dreams (being treated by a psychoanalyst, so it's kinda given) actually helped me remember my dreams.