C# Brainteaser compiler

Should this code compile? Does it? What does it mean?

using System;

class Test
{
enum Foo { Bar, Baz };

static void Main()
{
Foo f = 0.0;
Console.WriteLine(f);
}
}

Answer: This shouldn't compile, but it does under the MS compilers for both C# 2 and 3 (and probably 1 as well - I haven't checked). It shouldn't compile because only the literal 0 should be implicitly convertible to the default value of any enum. Here the decimal is 0.0. Just a little compiler bug. The result is to print Bar as that's the 0 value of the Foo.