I have both Blockbuster and Netflix accounts. I use Blockbuster when I
think "Hey, I want to see (insert movie name here) tonight!". The reason I
keep NetFlix is because they have a much, much larger selection than
BlockBuster. As an example, they have a huge selection of documentaries
that Blockbuster will never carry, and it's fun to keep a few of those
around for the dull days.

steve