I have a backlog (list) of series I'd like to watch. And the Dr. Who episodes that came later in the production schedules that somehow I missed and want to watch in order.

A series that played here was Hitchhiker's Guide to the Galaxy that started as a radio show. In college I listened to it on the CBC (Canadian radio since I lived a few miles south of the border) before it played in the US on public radio.

I mention those because in the Public Television universe here in the US they often times played in sequence on Saturday or Sunday evenings, so I tend to lump the memories of one with the others.