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I used to use Excel's RNG to determine random winners for various drawings at work, including such momentous things as shift bid winners when there were more otherwise equally positioned people than available slots for a specific shift.

Excel is far and away the best product Microsoft has ever produced, and definitely one of the top five applications ever developed by anyone. It's one of the most useful and flexible tools for all kinds of practical analysis involving just about anything mathematical. Another example is that handful of us once used it, quite successfully, to manage a particular $500MM book of business for a very large insurance company.

In fact, the only people I've met who really hate Excel are developers who find they're not as necessary as they wish they were because regular managers are able to figure things out and make reasonably good decisions without their help or input because they have a good grasp of Excel.