By now, we are all maybe all a bit too familiar with "Scrat" chasing his acorn and with his expanding group of friends' adventures in the frozen north. I certainly found this story to be entertaining enough, but running short on ideas and somewhat repetitive. When cast adrift on an ice floe, and heading to warmer climes, our wooly mammoth, sloth and sabre-toothed tiger have to figure out a way to tap the northerly sea currents and using an iceberg, get themselves back to the chill where "Ellie" and newborn "Peaches" await them. Along the way, "Manny", "Sid" and "Diego" meet some pirates - thin...