FizzBuzz. Can be written in shorter lines of code. But I find this implementation to be clearer.

gistfile1.txt

using System;

namespace Dialalpha.FizzBuzz
{
    class Program
    {
        static void Main(string[] args)
        {
            bool fizz = false, buzz = false;
            for (int i = 1; i <= 100; ++i)
            {
                fizz = (i % 3 == 0);    // true if i is a multiple of 3
                buzz = (i % 5 == 0);    // true if i is a multiple of 5

                if (fizz && buzz)
                    Console.WriteLine("FizzBuzz");
                else if (fizz)
                    Console.WriteLine("Fizz");
                else if (buzz)
                    Console.WriteLine("Buzz");
                else Console.WriteLine(i);
            }
        }
    }
}

@EricBeales: I usually tend to initialize my booleans when I declare them just to be on the safe side. I'll edit to add some comments though. Thanks.