Geek speaking here. I love DVDs, I love electronics, and I love computers. What a coincidence that Best Buy sells all three. My geek friends and I always exchange Best Buy gift certificates for birthdays. That way, we can all shop there without our wives getting too mad. We have to use the gift certificates, after all!
Anyway, their DVD collection is fairly amazing, although, it's not a great place to buy older DVDs. Their prices are not the cheapest, but they can be reasonable.