Yes, I do. That is how the Roku sends data...via the HDMI channel.
Once you plug it in and set up Roku you and your entire family will be able to huddle around that little monitor and enjoy all the best of the free channels available. You'll have plenty of opportunity to make popcorn, open a beer, take a leak, whatever you need a few moments for, during the commercials. After a winter or two of that, you may decide that the $8-$10 per month for Netflix or Amazon isn't such a ripoff after all.
But wait, there's more.
If you would like to have a more comfortable viewing experience by viewing via your TV, then get a Roku device that will connect via RCA phono plugs to the TV rather than HDMI. As I said originally, that is model Roku Express+
3910RW. It would set you back $35 but that is less than buying a new TV. Worth it? Depends upon how much you value lebensraum.