Claes Oldenburg recently died. He was, I guess, a modern sculptor.
I don't have much experience with modern sculpture. "The Song of the Vowels" which was installed on my college's campus about the same time I arrived didn't do much for me, but apparently it's still considered good.
The National Gallery of Art has a sculpture garden which I've toured, with several of Oldenburg's sculptures. I do get a kick out of The Typewriter Erasor--Scale X. I remember using the real life erasor before the days of correction fluid. I'm sure these days few people could identify it.