Chuunibyou movie is rather pointless - could've been better, but is basically a condensed version of the TV series with some very minor changes.
The first and last 10 minutes is new material though.

Unbreakable Machine Doll
This mixes a fanservice/comedy type show in with a decent story line, and works quite well IMO.
Actually, it's broken up into 3x 4 episode stories, however there's definitely progression on the overall story line.  As it only gives 4 episodes per story, it packs in a fair amount, meaning there isn't really any filler within the story (beyond the fanservice parts) but does have the downside of requiring you to pay attention to some details to understand what's going on (and in some cases, you won't really understand until the explanation they give you later on).  Even with that, I'm still struggling to understand some of the logic/reasoning behind certain events.
The main character is amazingly (and probably unrealistically) astute, but has the typical shounen tendency of being stubborn about protecting/saving the various female characters, and somehow never dies despite his injuries.

Unfortunately, despite the pace, the first season does not end the story.
3.5 stars