Mark's Daily Apple is a great website, he uses what he calls Primal Eating, which is almost the same as Paleo but it is a little more free with dairy and butter.
I have been doing Paleo for almost 4 weeks and I feel great. I have not eaten much butter or cheese but when I really want it I eat it. I feel great, it really just depends what you want to do. Strict paleo is tough, it is easy to get obsessed with also.