According to Wikipedia: "He was a founding member of Der Blaue Reiter (The Blue Rider), a journal whose name later became synonymous with the circle of artists collaborating in it."
I like best his work with animals in strong, non-linear, designs. I'm not much into pointy things. I find that I almost always like the balance he brings to a piece where, with some artists, I'm always wanting to crop them. I'm also into bright colors, so that appeals to me, too. He would lose me when he goes completely abstract except that, again, I find the balance of most pieces very pleasing.
In addition, his work strikes a very strong bell because some of his early plays with suggested line and shading are EXACTLY the way my mother was taught to draw. My early childhood was spent watching her do linoleum blocks that look amazingly like his wood blocks. But, again, such a wide range of styles that I float into some that push my buttons and then hurry through the ones that don't.

Mother's "Spring"
OR... was he using more and more of that absinthe crap they all used on the rîve gauche? That junk is another world, I am told, and brain killer.