"One does not simply watch Angels Beats without crying", a fun quote from a meme thats all to true.
Angels Beats an anime that will bring a smile to your face and a tear to your eye, on more than one occassion. The reason for this has to be the great characters that fill this anime, because as you watch the anime you just begin to love each character as you learn about them and their story. Thus allowing the viewer to get attached to the characters and really draw you in, causing those great feel good moments that leave you with a big smile or someone trying so hard not to cry.
Angel Beats also has very nicely done animation, allong with music that many fans have come to enjoy hearing.
Simply put if your looking for an anime that will be a fun and emotional watch that will just suck you in, without a doubt you should give this one a try.