Microwave Madness: While the 802.11b signal appears to be strong, don't be fooled.
Microwave Madness - 2: Using the timeframe, I zoomed in to the point where the microwave initially turned on. Can you see why their network went down?
Lunch Time Wireless Issues (microwave): http://www.metageek.net/node/1716
802.11b - baseline: Here is what the wireless traffic should look like without any other sources of radio activity. However, if you look in the spectral view, you'll see some odd behavior.
Microwave interference: Using the timeframe, you can zoom to the unusal areas in the spectral view.