"The Day of the Doctor" is here! Tens of millions are expected to watch the 50th anniversary special of the BBC's signature sci-fi series, Doctor Who, which could result in a windfall for the crown and the British people since the Doctor's adventures are the property of the publicly owned network. Who else profits?

Fool analysts Tim Beyers and Nathan Alderman take you through the business end of The Doctor's universe in the latest episode of Geekstock, The Motley Fool's new Web show, in which we talk about the big-money names behind your favorite movies, toys, video games, comics, and more.

Tim says Doctor Who helped Netflix (NASDAQ:NFLX) build a loyal base of subscribers who like sci-fi, horror, and other quality programming mainstream pundits might erroneously refer to as niche. More than 77 million fans around the world tend to tune in regularly, and Netflix's inventory of older episodes makes it easier for new "Whovians" to catch up fast.

Nathan adds that Discovery Communications (NASDAQ:DISCK) manages BBC America and has enjoyed record ratings for its simulcasts of current episodes of Doctor Who here in the States. The popularity of the series has permitted the network to experiment with other sci-fi properties, such as Orphan Black.

Do you agree? Will you be tuning in to "The Day of the Doctor"? Were you introduced to the series via Netflix or another means? Please watch the video as host Alison Southwick puts Tim and Nathan on the spot, and be sure to check back here often for more Geekstock segments.