Microwave Popcorn, Minus the Ripoff - NYTimes.com

[mairegirl]

But it appears I missed the boat. All you do is take popcorn - say, 1/4 cup - and put it in a brown paper bag (preferably the large lunch bags sold in supermarkets ), then fold over the top a few times (some people recommend staples, but it seems the bags can catch fire that way and why risk it; the staple is unnecessary), then pop until the kernels stop, which is high heat for two minutes in many cases.
Microwave Popcorn, Minus the Ripoff - NYTimes.com