Angel Beats! is a story about the afterlife in which unruly girl, Yurippe, starts a rebel group to fight against an army of people trying to delete them forever led by Angel.
This series is a ten for many reasons. The first being that it's a short series, spanning 13 episodes. This is important since many T.V. shows, especially Anime, are too long. Even Death Note, which was amazing, was stretched out a little much. Angel Beats doesn't falter like this. Also the story has a lot of clever writing up until the very end, which sucks you in.
Additionally the characters are clever in every way and for the most part we get to know each unique personality quickly and in depth. I would like to know some characters a little more but I'm satisfied.
Most importantly there is something thing that makes this Anime a "resistance fighter" as I like to call it. Angel Beats! has little to no Ecchi or Fanservice and thank God. It has no Moe (younger than teen characters with annoying voices and sexual suggestiveness).
Beats! has all the great Anime traits and hit's a home run with them. Similar to how Paprika is like Inception. Angel Beats! is similar to Lost. So if you like Lost and Anime you will like this.
Angel Beats! conquers and soars. Showing what a great Anime can do, and be with ease.
(NOTE: this review is for the Subtitled version not the Dub which is much worst and could be different).