You know how children like to watch the same shows over and over again? I know mine do. We have a Tivo for both TVs in the house, so when we know a particular show is popular, we set it to never delete. The problem is that if a lot of shows are marked to never delete then other shows get deleted too quickly.
To get around this problem, I decided to start archiving shows onto my computer using Tivo Desktop. The auto-transfer-series feature in Tivo Desktop will automatically transfer all shows of a given series, which over time should provide us with a complete set of shows available on demand. Now I don't have to worry about setting any of them to never delete on the Tivo box itself and I don't have to guess which shows my kids will want to watch again (and again).
Once I start to run out of disk space, I suspect I'll start to burn the less popular shows onto DVD, which can be done with Sonic's MyDVD. I love that capability. We already have about ten DVDs worth of archived shows.