Art nouveau (Mucha, Klimt, Guimard and others...
)
I love the curves, the feminity and the feeling of intimacy of this art movement, the fact that the inspiration comes from flowers and nature, it just breathes the pleasures of life.
Art déco
I know it way less than the art nouveau, but art déco is regarded as the "manly" version of art nouveau. Straight lines and angles. It gives a feeling of .... oddly being satisfied because all the geometry looks perfect? (I don't know how to explain it xD)
That's something else but there's an artist that left a mark for me : H R Giger.
I've always been fascinated by his art, I still can stay in front of one of his work for a long time, trying to understand it.