There's a new trend at Google: let's create videos where we answer questions and upload them on Google Video. While this is a more personal approach, there must be a way to include the transcript along with the video. The text is searchable so you can find it later on and it's easier to reference it.
In this video, Google's Matt Cutts explains how to create a good site that ranks well on Google. To summarize the tips: make sure the site is crawlable and it has interesting content.