Other than the great clicky sound the buckling key springs make, another great thing about the Model M is that you can just pop the keycovers off and toss them in warm soapy or bleach water to clean it up.

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Just use a butter knife or screw driver, liek? That is a great feature..

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It depends on the Keyboard. Generally the ones with a grey IBM logo have two piece keys, you can just pull the cap covers off of the key.

On the Blue IBM logo models, made by Lexmark in the early to mid 90's, there are one piece keys that require a bit more effort to remove, but still pretty easy.