This further complicates building video into web sites with a significant IE user base. I've already seen mushrooming complexity with fellow devs trying to get

This further complicates building video into web sites with a significant IE user base. I've already seen mushrooming complexity with fellow devs trying to get Ogg into the mix using <video> tags, wanting to "do the right thing", and still ending up with a Flash fallback for Windows users. HTML5 as we currently find it isn't making this simpler at all.