I know I've been writing a lot about porn on here recently (there was a war, after all) but I just couldn't resist this story. It seems that a Thai zoo is going to play panda porn videos to encourage breeding. They're even going to pick the time when they feel the pandas would be feeling the most amorous. "We'll play the video at the most comfortable and intimate time for him, perhaps after dinner," says the project chief.The one drawback? Only the male panda gets to watch the porn. The female panda just has to wait for the male panda to come calling with his newly learned techniques and inspiration.This got me thinking about what porn I would show someone who needed to learn about sex. Alot of porn out there might be really hot to watch, but it doesn't really teach you what to do in any kind of useful way. I think if I had to go for anything, it would be Nina Hartley's series of instructional films. Nina has been in the business for a long time and she knows how to create films that are both informative and sexy. Sometimes the films seem a bit old - but the information in them is always useful.Just a few of Nina's great titles:Guide to Anal Sex Guide to CunnilingusGuide to FellatioGuide to MasturbationGuide to Couple's Sexploration