It's an anime about magic girls hat is super happy and really heart warming. It has no violence, which is a real big step up from most animus these days.
Until you reach episode 3, that is.
Madoka Magica is a fantastic Magical Girl anime, deconstructing the genre into something completely fantastic. Written by the infamous Gen Urobutchi, so you can tell how many tissues you are going to need. While it takes a lot (And I mean, a lot of inspiration) from Kamen Rider Ryuki, it's a fantastic anime. And is most defiantly recommended.
Discuss, but for spoilers for people I would head warning for you all to use spoiler tags.
(I also made this topic so I could post pictures of my waifu Kyoko without being off topic lmao)