Rogert Ebert is a very fannish writer. Even when he admires a fantasy film his review consists of one grumpy nitpick after another.
Here is an example of the way he served out Ice Age: Dawn of the Dinosaurs, while giving it just about the highest possible rating on his scale, ***1/2 stars out of 4:
All of our friends are back, and some new ones, including a ferocious T-Rex and a sexy rival for Scrat the squirrel, named Scrattè, accent grave over the è. As befits this land before time, Scrattand Scrattè are sabre-toothed squirrels. No wonder the big teeth died out. They’re of more use to a carnivore than a vegetarian. But logic like this is of no use in a movie where Sid the Sloth (voice by John Leguizamo) adopts three dinosaur eggs and plans to raise the babies.
[Thanks to Andrew Porter for the link.]