Barcelona!
I've just gotten back from a trip to Cleveland to visit my grandparents. While I was there I also managed to visit the Barcelona! (complete with extraneous exclamation point!) exhibit at the art museum there.
The exhibit showed works of various Catalonian artists created between about 1890 and the end of the Spanish Civil War, including lots of wonderful Dalí pieces and an enormous amount of Picasso's early work.
They had one amazing painting, Ramón Casas's "Garrote Vil", which that shows a crowd of spectators cheering on an execution. I remember being utterly entranced by it at the Reina Sofía when I was in Spain.
Another painting I liked, an early Dalí called "Maria Carbona," looked wonderful in the museum but terrible in all the pictures I've since seen online. It is a portrait of his girlfriend that he painted at 21 for practice — on the other side of the canvas he painted a still life study.
I'd also never seen any of Dalí's later, Cubist, paintings up-close — the level of detail he used is really something.
Since I have a decidedly unsophisticated taste in art — give me bright, bold colors that I can see and I'm happy — I very much enjoyed the set of propaganda posters from the Civil War. Eliciting more of a "meh" were the collection of furniture (doors and chairs, mostly), the architecture models, and the films (Buñuel, blech).