GATE is going to surprise people, I think, with the realistic way it handles unrealistic subject matter. It's not a typical anime where modern soldiers are just dumb cannon fodder. Things should get exciting next episode.
Gangsta episodes 1 was ... okay. Didn't make a lot of sense, really, but we'll see if a plot does develop. All kinds of plot holes in the first episode didn't leave me with a good impression, though.
Ranpo Kitan episode 1 was enjoyable. Damn it, though, that kid was just too cute. I still feel confused inside. Seems pretty clear that he has psychopathic tendencies.