For channel 4, they built a diorama containing a rain gauge, barometer, thermometer, wind gauge, and clock, pointed a videocamera at it, and launched the first weather channel.
J. and Twin Falls, Idaho. (Though large chains like Zales have approached him, Rothman says they tend to want more business than he's willing to give--no more than 5% of total sales.) He often makes his salesclerks practice in front of a videocamera so they can analyze their performance later.