Probably some of the better pizza around Provo. I personally prefer something a little more "authentic" like Terra Mia, but Slab blows your typical chain places (LC, Domino's, Pizza Hut, etc.) out of the water. Then again, IMO, not everything at Slab is awesome. I've had a few things there that were so-so or not so good.
It may be one of the better places within walking distance of campus, but that's not saying much (other options are Subway, stuff in the Cougar Eat, J-Dawgs... slim pickings).