I'll have to agree with This_Is_Boring. You can tell they blew all of their budget on the big troll war scene at the end of season 2.
The CG on Kankersore (whatever the hell that landshark is called) was awful. I've seen better computer generated monsters in the Anaconda movies.
Also, was anyone else thinking "Tremors, much?", when that over-sized thing was chasing them?