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The new LINQ CTP also support lamba statement block, instead of only expressions. Still only expressions are compilable to expression treeds though (hence the name *expression* trees..)

Anyway, this offers the opportunity to do away with anonymous method syntax. See the sample below: no more explicit typing of your parameter, it will be inferred. This certainly makes things more readable

Important to know: The VS compiler does not support this syntax in the IDE yet. I does work however. You should only look at errors that are mentioned in the Output Window

public static class IntegerEx
{
    public static IEnumerable<int> UpTo(this int x, int y)
    {
        for(var i = x; i <= y; i++)
        {
            yield return i;
        }
    }

    public static void Do(this IEnumerable source, Action action)
    {
        foreach(T item in source)
        {
            action(item);
        }
    }
}

class Program
{ 
    static void Main(string[] args)
    {
        2.UpTo(6).Do( x =>
        {
            string message = string.Format("The number is {0}", x);
            Console.WriteLine(message);
        }  );
    }
}