This is a fun film. The Rock makes a good action hero, he looks the part, moves well and can carry some humour as well. The Scorpion King is a good example of this. The story is predictable, but that doesn't matter. It flows well and it doesn't take itself too seriously so it's a joy to watch.
The supporting cast are good as well, you have the beautiful damsel (who is far from defenceless), the cheeky thief and the obligatory tragedy. As I say it's far from original, but just make yourself comfortable, chew the popcorn and enjoy the ride.
Buy The Scorpion King now from Amazon (and why not, it's a fun film)