Just wanted to run this by my fellow mac lovers and to see if its worth doing. being summer in Australia, its scorching hot and in my opinion not good for a already hot running mac (i render a lot of 3d and video in FCP). also theres the effect of further heating up my room even during the night as i need to leave it on to share its internet connection to other computers in the house and do any long renders. my power supply has gotten up to 80 degree C, and my CPU in the 70's C. most of the heat seems to be on the top of the iMac. i Have the first rev of the aluminum iMacs ok so heres my idea. if i get some clear plastic tubing, and a small pump (im thinking fishtank sort of stuff) and run the tubing along the top of my iMac near the vent (but not covering it) do you think it will have much of a effect. or just spill water all over my mac?