I've been missing something, I think

I am, as most of you know, a huge fan of science fiction, and I was told I must watch "Torchwood" on BBC America. It stars the very handsome (and gay) John Barrowman as Jack Harkness, an immortal (I haven't seen the show yet so I don't know the specifics) who has taken the name of a Captain that served during the 2nd World War. As I understand it, this scene shows the immortal "Jack" meeting the Jack from the 40's. I really do have to watch this show! I have already placed season 1 in my Netflix queue.