"Tristan Taormino's Expert Guide to Advanced Anal Sex" is a good production from Vivid and Tristan Taormino that, as its title implies, provides a good deal of information about the practice of anal stimulation. The disc kicks off with about 20 minutes of informational material, and a variety of topics are covered. There's info on the anatomy / science of anal play, preparing for it, pointers on what to do, info regarding the male prostate and the female G-spot, material on various positions, and coverage of the topic as it pertains to both men and women (as givers and receivers, alike). After this, there's a transition to four demonstrations involving adult stars, each with its own unique characteristics and flavor. Sex-wise, the demos are typically fairly hot, though a couple of them don't end in a male climax, so it's a bit of a let-down in that regard. All in all, this one is informative, and the production achieves its educational goals well.