Here is my shortest Groovy version of FizzBuzz in 62 characters and legible.

(1..100).each{println"${it%3?'':'Fizz'}${it%5?'':'Buzz'}"?:it}

JavaScript version in 66 characters, but a bit convoluted.

i=0;while(i++!=100)console.log((i%3?'':'Fizz')+(i%5?'':'Buzz')||i)