The Journal of Visualized Experiments (JoVE) launched its first issue recently, and unlike most scientific journals, you won't have to dig through dense text to understand what's going on. Everything is video-based, and interestingly, there's a very YouTube feel to the whole thing. Videos have permalinks, are tagged, and can even be embedded in blogs or other sites. Sure, lectures and other academic events have been streamed online for a while now, but I don't think something that so closely mimics mainstream video sharing sites has been seen before. There's even a Web 2.0 vibe with the URL being myjove.com.