Gunslinger Girl 1-13 (complete)
Gunslinger Girl: Il Teatrino 1-13 (complete)
Gunslinger Girl: Il Teatrino OVA 1-2 (complete)
Ended up enjoying this overall. Based on the name and cover art alone, you'd be forgiven for expecting an action and/or fanservice-heavy show, when it's really the exact opposite of that. Really thoughtful and sombre at times. Not much in the way of large, overarching plot, but still good, and a decent amount of episodic vignettes are thrown in as well. A little bit of cop-show style political intrigue here and there make me want to try and seek out other shows in the same vein as this and GitS:SAC.
Unfortunately, the second season definitely suffers from not only the art style change brought about by a different studio animating (the slightly different character designs didn't bug me, but I preferred the more drab colour palettes of the first season), but also the fact that the majority of the Japanese voices were recast, something I don't think I've come across before, at least certainly not on this scale. It makes a lot of characters just seem like almost completely different characters compared to before. A lot of the girls in particular had some nice, understated VA in Madhouse's offering, but now sound like typical high-pitched, high-energy anime girls in Artland's season. It's quite jarring, especially since the writing of the show is otherwise pretty much on par with the first season.