I currently have a Roku on one tv, but am considering buying a second Roku for a second TV so that my husband and I can watch different channels on two TV's, each with their own Roku device. Can I do this with only one Roku account, or do I need a separate account to watch different shows at the same time?
You can always watch different channels on different devices. The only time you may have a problem is if you try to watch two different things on the same channel simultaneously. Some channels limit the number of simultaneous streams. Of course your Internet connection will have to be sufficient to stream multiple videos at the same time.