Well what can I say except, the plot of zoo is ridiculous, but for some reason I find it enjoyable to watch. The plot is silly with more holes than swiss cheese. However, the CGI is decent, the acting is not too bad, the action is decent also and you get too see almost every city on Earth, as they seem to do a LOT of traveling. It's definitely worth a watch, I mean it's not going to win any awards (I think) but it will keep you entertained, just as long as you don't take it too seriously.