Art is a funny thing. It can be at once obvious, obscure, beautiful and bizarre. But in the hands of Pop artist Claes Oldenburg, master of small things made bigger and hard things made softer, it can also be hilarious. Was Oldenburg looking for laughs back in when he drew up plans to replace Chicago's Navy Pier with a spoon? But never mind; it's pure delight to come upon his humongous spoon in the Minneapolis Sculpture Garden.