My most compact, sensible and readable answer to the FizzBuzz problem.

fizzbuzz.cs

using System;
namespace CrapTester_vs10 {
    public class Program {
        static void Main(string[] args) {
            string s;
            for (int i = 1; i < 100; i++) {
                s = "";
                if (i % 3 == 0)
                    s += "Fizz";
                if (i % 5 == 0)
                    s += "Buzz";
                if (s == "")
                    s = i.ToString();
                Console.WriteLine(s); //LOG
            }
        }
    }
}