Does anybody have any experience with producing phantom images in stereo? I'm looking for that one sound that really jumps out of the speaker, and suddenly seems to be behind the listener (okay, behind and beside... not directly behind). There's an Aphex Twin track that does it, and it just produces such an amazing sensation... knowing that there are no speakers back there, but the sound's there anyway.
I'd love to figure out how to duplicate that effect. I've been playing around with basic delaying and filtering, but though I can get a sort of enhanced stereo position, I can't seem to get that real mind-blowing "he's behind you" feel.