Don't just hate it/them; push them out of your space. If they need space, they should feel free to stay in the circulator's/scrub's corner. If they really need to be close to the field, next to the anesthesia equipment, let the pertinent one or two stay there, as needed, with the understanding that they get out of your way stat when you need to do stuff. This is not the surgeon's corner at the local pub.
Always ask yourself: in case of an emergency/code, do I have enough space to work? Same goes for people putting crap on your cart/machine. You are the EM/CCM doc in the ICU, and those are your tools/space in case of an emergency. Do not compromise, even if you are a resident. Be polite and accommodating, as much as possible, but put patient safety first.