I routinely enjoy the Wall St. Journal wine column, Tastings, by spouses John Brechter and Dorothy Gaiter. Now they are doing video as well. A nice 5-minute journey into "inexpensive" (not cheap!) Bordeaux to go with your Sunday morning cup of coffee.
Your winery could easily do something similar to introduce your vintages each year: What does it taste like, what does the bottle look like, and what foods might go well with it. The nice thing is that a small investment can be leveraged in many ways - on your Web site, on your blog, in your e-mail newsletter, posted on YouTube, and sent to the media. I'll bet someone like Mary Baker at Dover Canyon does this soon (having seen pictures of their great porch and views - what a great setting for a video).
Web-based video is something for Web-savvy wineries to look at more closely. It doesn't have to be fancy, just authentic and informative.