Torchwood is a british spin-off from the new Dr. Who series on BBC America. Some of the episodes aren't that great but then they will put together a few that are just amazing. The last two of the season were some of the best writing I've ever seen in sci-fi.
Anyway, I just finished watching the Season Finale and holy crap, what a downer. They killed two of the main characters off and had these crazy farewells to them. The thing is, the episode before filled in all this backstory about all the main characters and then they killed two of them off.
Nuts. Very good though.