Especially knowing your style and what you like @iaura, I think some of the Dali's work is smart & morbid, especially the small canvas. Let me find one for you.
I agree about Picasso, but he was a perv and it means everything he did was kinda messy haha and it tells a lot about people appreciating his art. But yeah you can't go wrong with Picasso, it took me a while to understand that.
Talking about the blue period do you know about Klein?