Prayer Won't Change Anything.
I invariably look really distressed.
I've typed up some thoughts on Attack on Titan in the course of watching, but I can't post them because I don't want to spoil anyone! This isn't just a case of 'well, put it under a cut, then'; people who haven't watched it might still click on the cut! How am I supposed to stop them? I went in knowing nothing beyond the bare bones of the premise (it's an anime! there are giant monsters! they eat people! oh dear!) and the fact that it's a lot less cheerful than Free!, and it's an experience I highly recommend.
There are eighteen episodes currently available. I charged through the lot in about five days. I'd probably have finished faster if we hadn't suffered a power cut in the middle, and if there hadn't been a moment or two that hit me so hard I needed several hours to recover.
If you have the time and the inclination, give it a try! It's pretty depressing and occasionally bloody, I should warn you, so stay away if you think it might distress you, but it really is extremely worth watching. It's available legally here on Crunchyroll (in the UK, even! Legal anime websites are never available in the UK! If you're in neither the UK nor the US, I don't know whether you'll be able to watch it, but you can give it a shot). Try the first few episodes and see if it catches your interest.
I know I love a lot of terrible things, but Attack on Titan is genuinely excellent. And I repeat: you can watch it online, and it's completely free and completely legal. Although I can't guarantee that it won't make you watch the same Argos advertisement six times if you don't have an ad blocker. IT DOESN'T MATTER; ATTACK ON TITAN IS GREAT.
(If you'd like to know at least slightly more before you go in, futuresoon — has made an informative post on Tumblr (which is actually what got me to start watching). She's also made a more detailed version of the same post on Livejournal, but I'd recommend using the Tumblr one to make your decision and only checking out the Livejournal one if you're still not sure; as I've said, the less you know, the better.)