Thats how my room is at night, when i shut the door. I have two systems running 24/7, one in the main part of my room (main machine, of course) and then theres my folding machine/server/test/whatever box in my closet.
I actually made my room a bit cooler, by getting an earthwatts psu for it. Then theres my laptop, that thing can put out heat when running on 100% cpu load.