Back in June, Clark told you about Netflix's partnership with Roku for a $99 set-top box that delivers on-demand flicks directly to your TV via the Internet. A monthly subscription fee of about $9 is also required to have access to some 10,000 movies.

Now Blockbuster has launched a competing on-demand service. Their box sells for around $100 and that price also allows you to watch your first 25 movies for free. Following that, you'll pay $1.99 for older titles and $3.99 for new releases.