Why to watch: Any excuse is a good excuse to start watching "Doctor Who," but this summer is an especially good time for newbies to become Whovians. The British sci-fi staple is celebrating its 50th anniversary with a special airing later this year, and a new Doctor will also be revealed during the Christmas special. If there ever was a good time to figure out what all the fuss is about, it's now.
Where to watch: Amazon Instant Video, iTunes, Netflix
When to watch by: Nov. 23, 2013, when the "Doctor Who" 50th anniversary special airs in the United Kingdom.