[Stu]

Not remembering dreams is also down to the flood of thoughts that come over you when you wake up. If you actually stop those thoughts and have a clear mind when you wake up, you are more likely to remember the dream.

That's why your always going to remember a dream more when you slowly drift out of sleep at two in the afternoon - a fond hobby of mine - as opposed to having your alarm wake you in the morning.

I have also suddenly remember dreams entire days afterwards when something in reality triggers the subconcious [E.g. you get into a car and suddenly remember a dream you had that took place in a car].