So, I've got to lay claim to the 56 byte solution:

sh-3.2$ wc fizzbuzz.rb
       0       2      56 fizzbuzz.rb
sh-3.2$ ruby fizzbuzz.rb | tail -11
"FizzBuzz"
91
92
"Fizz"
94
"Buzz"
"Fizz"
97
98
"Fizz"
"Buzz"

...but I'm not sure if I should post it. Would people consider that a 
spoiler?

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