Tommy M:
Ha! That's brilliant!
It's well worth keeping a diary of your dreams if you don't already do so, even just fragments recalled upon awakening as there's a wealth of information to be found there.
I think it is interesting. Then I heard one person say that it's mentally damaging to do so... unsure why. he said something about it taking tons of mental effort to recall that which your brain is working hard to forget. i don't see why that's bad necessarily, though.
other argument is that it's happening subconsciously for a reason, just forget about it =).
however, i think it is awesome to remember dreams. that can also lead to lucid dreaming which is even more awesome! as to the dream diary, if you do it consistently upon awakening, you will soon find that you remember more and more each time.