gistfile1.txt

{9:07}[ruby-1.9.3]~/Desktop ben% ruby super_module.rb
C
B2
B
A

super_module.rb

class A
  def foo
    puts 'A'
  end
end

module B
  def foo
    puts 'B'
    super
  end
end

module B2
  def foo
    puts 'B2'
    super
  end
end

class C < A
  include B
  include B2

  def foo
    puts 'C'
    super
  end
end

C.new.foo