Re: The Doctor Who primer
Being a Brit, I grew up on Doctor Who and as Regneration is part of the show I don't find it jarring at all, same with the companions they come and go. Though I can understand why someone new to the show might find it a bit jarring.
Before you start watching Torchwood, you'll need to watch the 9th Docotr episodes.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.