Thanks incognito and syntex... I didn't notice this for some reason until today

I think you are onto something here... vivid dreams require good imagination.
And imagination is an art-related skill

I've always found that I had a great imagination - mostly because of my mother and the way she crammed books into me as a kid.
And my father (who is a commercial artist) reckons I have a natural 'raw' artistic talent... undeveloped though.
He envies my rough-sketch style, as his job has forced him into a clean cut style

And now that I think about it... during the last LD 'wet' spell I had, I was more active with developing games and 3D graphics
Hmm... maybe its not a coincidence at all...

[EDIT]
I just had a thought
Perhaps its not directly about creativity
How about being 'balanced'. Most people nowadays are unbalanced onto the logical side of things
Being creative helps balance you out.

Just a thought...