OK, i got this plastic, clicking, rattle in the back. I have had just about all the interior out and it is making me nuts. sounds like a washer vibrating against plastic. I know no can help me, but i feel better whinning in a forum. turn the radio up.

 

check the hydraulic thing for the hatch.....thats where i found my rattling...... its where it meets the chassis of the car. and the cover for the strut tower bars

 

check to seee if the hatch is rattling too.