gistfile1.rb

class AttributeAccessor < Module
  def initialize(name)
    @name = name
    @name_ivar = "@#{@name}"  
  end

  def included(model)
    super
    define_accessors
  end

  private

  def define_accessors
    define_writer
    define_reader
  end

  def define_writer
    name_ivar = @name_ivar  
    define_method("#{@name}=") do |value|
     instance_variable_set(name_ivar, value)      
    end
  end

  def define_reader
    name_ivar = @name_ivar
    define_method(@name) do
      instance_variable_get(name_ivar)
    end
  end
end

class Book
  include AttributeAccessor.new(:title)

  def title
    "#{super} + super works!" + "#{@title}"
  end
end

book = Book.new
book.title = "Module Subclassing Guide"
puts book.title

Now thats awesome.