Today’s featured promo on MacUpdate offers PhotoPresenter 2.8.2 for US$5.50 (31% off, retail $8.00). “PhotoPresenter allows you to present quickly and easily all your pictures and movies. Choose your preferred slideshow style among several amazing themes and view any image and movie — either from both your iPhoto and Aperture libraries or from anywhere else, such as from a CD.” PhotoPresenter 2.8.2 requires Mac OS X 10.4 or later.