This place has the best pizza in Vegas. Period! Whether you like pesto pizza, white pizza, (which is delicious. My favorite on their menu) traditional red sauce pizza, or calzones, Grimaldi's has the best of them all. Price isn't bad either. $10 for a small calzone (which is huge) and the pizzas start at $9 or $10 for a personal size pizza (which is big enough) and go up depending on how many toppings you want.
The service is always great here, and they even have pizza dough for kids to play with instead of traditional kid menus!
Boyfriend wanted me to add that the spicy chicken sausage is awesome and it actually is spicy. (And he's an authentic Mexican so he knows his spice lol)