I rarely just sit when watching tv so that is when I cut out felt orders, crochet stuff or do lesson planning. Often I am sitting at my desk on the computer while watching tv. I think TV has been given a bad rap and like anything needs moderation in use but for those that just can't step away without watching "just one more show" then like an addiction it needs to be avoided altogether.
For me the computer is a far more serious time waster than the tv - especially during naptime. In a sense it is a substitute for the fact we have little to no adult interaction during the day and all my "friends" live in my computer.