Believe it or not, there's still a lot of homes that aren't using DVD players. If you haven't made the leap from VCR to DVD yet, Robert over at HomeTheater.About.com has a great FAQ about DVDs and DVD players to help you get a better understanding of what you're missing. The FAQ starts out:

DVD is the most successful home entertainment product in history. Ever since it was introduced in 1997, DVD has taken off like a rocket and can be found in a growing number of practical configurations. However, what is DVD what really makes it different from VHS? To find out the answers to some basic questions on DVD, check out the following DVD and DVD Player Basics FAQs.

Read DVD Basics FAQ - Answers to Basic Questions About DVD and DVD Players