Meet your office heater. Photo by conskeptical on Flickr. Some rights reserved
In these freezing times (at least up and down the UK - west coast US readers, look away now), many more are either working at home or in small offices where, with the price of heating being what it is, it's not always as warm as it could be.
But you always have your computer, don't you? Even the average laptop is essentially a 65W heater sitting right there in front of you. Trouble is, a lot of the time it won't do that - it's only when you get the processor nice and hot that the fan will kick in and start pushing the warm air out to you.
So the question is, what do you do to make the processor start heating up? Obviously, the smart money is on opening some application or other that will get it working.
Our lunchtime question for you, then, is: which application do you start to get your computer's fan running?
A quick poll on Twitter found support for
• YouTube (Flash has an interesting tendency to get fans to kick off)
What else? Tell us your favourite CPU-sucking app..