HTTPS Everywhere partially breaks the InfoQ presentation videos
When you're viewing any presentation from the InfoQ website http://www.infoq.com/presentations/ without HTTPS Everywhere, you'll see little gray bars in the video time line, marking the moment when the presenter changes its slide.
If you activate HTTPS Everywhere, those marks won't appear. A simple workaround I found is to disable Cloudfront in the HTTPS Everywhere rule set.