Above is the Torchwood Panel at Comic Con. By Part 4 of the videos, John Borrowman is singing.
I previously posted the season preview for Torchwood: Miracle Day presented at the San Diego Comic Con here.
There are also many videos on line with interviews with the cast and crew. In the above video, Jane Espenson discussed Torchwood, along with writing other genre television shows.
Reportedly the series gets darker by Episode 5, and major events occur in Episode 7.
There are some mild spoilers regarding Episode 3 below.
The third episode of Torchwood: Miracle Day, Dead of Night, was the weakest of the season so far. Highlights include an homage to Doctor Who in the clip above. During a raid on PhiCorp, Jack remarks that it is “bigger on the inside than on the outside.”
The episode did build up the conspiracy more, but also was weakened by having two of the main characters wander off for a couple of gratuitous sex scenes. The scenes were cut from the version to be shown on the BBC this week. The scenes includes both homosexual sex between Jack and someone he picked up in a bar, interspersed with a heterosexual sex scene between Rex Matheson and Dr. Vera Juarez. A video of the sequence is available here.