I absolutely LOVE PhotoVision Video Seminars. I'm not even sure how I found out about these DVDs, but they rock! The annual subscription fee is $149 (but if you're a PPA member is much, much less and there might be other discounts out there too) and well worth the money.
DVDs are sent bi-monthy to you for a year. Each DVD has six two-hour videos with various photographers giving you tips and showing you how they work. Everything from workflow to lighting to sales is covered in these DVDs. I've found that the senior and portrait work have been the biggest asset to me. Just being able to watch these fabulous photographers work on location with clients will give all kinds of new ideas. And a great thing about them is that the target all aspects of professional photography including portrait, commercial and event photography. I signed up late in 2008 and have been so busy that I'm not even through the entire year yet! The 2009 cd includes lessons from Sarah Petty, Lori Nordstrom, Parker Pfister and a ton more!
These are great DVDs for those just starting out and seasoned professions!