I really liked grief syndrome, adapted from Puella Magi Madoka Magica's anime, a 2D beat them all wich takes 30 minutes to finish, but with great replayability, 3 people coop and a fan made online patch.
Other than that, crimzon clover, a danmaku created by a superplayer is kinda awesome.
New super Marisa land is good too, i think it's from tasofro as well
edit : This video is freakin' awesome, the guys head made me laugh so hard xD