.I would recommend the typical template of "5 best" and if you have more suggestions, maybe another "almost best" list. Also, if you could give a brief one-liner explanation as to why, that'd be great.
My personal "best of the decade", only 3 because I haven't seen enough within this decade to have more than 3 "best of"
:1. Going my home - it's like the usual Koreeda, but in TV format (more to watch!) I'm an ardent fan of his - always love the slow, deliberate pacing, subtle tragedies, and his knack for getting very natural, documentary-like performances out of his actors/actresses.
2. Kazoku no katachi - a great social/comedy drama with a very light touch of romance. Plot line is more than believable, there's no villain, and it's just enough bittersweet. In the end I find myself rooting for all the characters.
3. Soredemo ikite yuku - not usually fond of great tragedies like the ones portrayed here; fortunately Sakamoto Yuji doesn't dwell on the tragic as much as the moving on. And Mitsushima Hikari is one of the best actresses, like, ever
