If you aren't bothered by the occult then it's really good; good characters, drama, evil conspiracies, mysterious things happening. Me, I found myself torn, because, unlike Buffy or the Tomorrow People, the psi stuff was too close to real magic practices for me to happily put it in the "pure make-believe" box (e.g. using Ouiji boards etc); I watched it but then I came to think later when I managed to get tapes from someone that I shouldn't have done that.