Of all time: The Toy Story franchise. I acknowledge that the animation in Toy Story One was groundbreaking, but it is a façade for a generic plot with unlikeable characters. Toy Story Two is probably the best of the franchise. Three, Four and especially Lightyear feel like shameless cash grabs meant to (ironically) sell toys.
Of the last year: The Whale. I don't get why people are acting like Brendan Fraser being morose in a fatsuit is so groundbreaking.