I was curious how many of you buy TV DVD sets, and what helps you to decide which to purchase? We have a fair amount of TV on DVD sets, picking up many of our favorite shows, but I'm starting to find that the majority of them sit on the shelf without being watched much. We do get good use out of the comedy ones, and watch them during our lunch break or on weekends, etc. - such as The Office, Scrubs, Arrested Development, Simpsons, etc. Some of the other sets we've picked up, don't end up getting watched much - at least right now. I keep thinking that "someday we'll want to see these". Do any of you have this happen with TV DVD sets that you pick up - or do you just avoid picking them up?