To give the postive reviews due weight, probably just one should be referenced.  On National Review, I found at least 2 positive reviews.  However, one was from a fellow at the Discovery Institute, so I chose the other one (by David Berg, senior segment producer at The Tonight Show with Jay Leno).  As Dave souza mentioned above, since the positive reviews were found at Rotten Tomatoes, it might be more relevant to pick a positive review from this site to reference.  So the paragraph could be changed to:   "One of the few positive reviews appeared in Christianity Today "   I think this is a good solution since the source (Christianity Today) doesn't require mentioning that it is conservative/religious/right wing due to its name.