Hee, generally the darkity dark recesses of your soul dreams are the ones you don't remember because they're too threatening to be allowed into your conscious memory. The most useful dreams to psychoanalyze are the ones where you can only remember part of it, and there are blanks in between sections where you're not quite sure WHAT happened, but you know something did.

But yeah, to mangle Gandhi, "I like your Freud; I do not like your Freudians."