Okay. A friend bought me some pop tarts for Christmas (don’t ask). So I was sat here, ready to eat them. But alas - you had to cook them first. Now instead of going downstairs to toast them properly, I decided to try a little experiment.
Can pop tarts be cooked by use of just a computer?
I opened up my machine and placed the first one on top the stack of hard drives (none of which have any coolers, so they get quite hot after a few hours…and the computers been on all day.). Trust me, because they’re all crammed together they get HOT and as such make a great ‘cooking’ surface. Especially because they have a nice clean silver case. 
http://img307.imageshack.us/img307/6261/image15mq.th.jpg
The other one was tucked right under the ADSL modem which gets rediculously warm after extended or heavy use. It has hardly any vents and no fan, so heat just builds up. (For the purpose of this pic, the pop tarts aren’t completely under the modem.).
http://img502.imageshack.us/img502/9291/poptartmodem2ok.th.jpg
And they were left cooking on the computer for a good few hours whilst I used the machine. Occasionally I needed to turn them over to get even heating.
And this was the result of one:
http://img378.imageshack.us/img378/4857/deadpoptart0fd.th.jpg
The end product wasn’t as hot as you’d get in a toaster, but still had a generous amount of heat packed into it - enough to enjoy them. And there we have it. A wireless ADSL modem cooked pop tart. The HDD one wasn’t as well done (but was still hot enough to eat and enjoy!), but I think thats to do with the fact the CPU, GPU and power supply fans were nearby and were drawing lots of cool air in.
It is indeed possible to cook food on a computer. Obviously computers weren’t designed to do such tasks, but as this test shows - it can be done. Either that or my machine seriously needs some cooling…
But seriously, you shouldn’t play with your food. Or abuse your computer in this way. 