A few thoughts, so far:
1. The guy playing Ianto gave an absolutely fantastic performance in "Cyberwoman." Too bad the script sucked, and too bad Ianto's scripted actions in the episode were so throughly stupid that it wrecked the character's credibility for *all time.* You don't just have a hard time believing he stays on the show after this; you have a hard time believing the other characters don't take him out and put a bullet in his head. Literally.
2. ...how many people is Gwen going to snog over the course of the season, anyway? DAMN, girl.
3. Jack's pistol instruction leaves a hell of a lot to be desired. Gwen's grip is lousy, and so is his (though you could make a case for him having learned in 1941); he starts off getting her to shoot one-handed and straight-armed, which isn't what you'd do in combat conditions; muzzle discipline is downright petrifying; and he manages to make it through the entire sequence without once mentioning the words "front sight."