If you want to get full with delicious food on the cheap (who doesn't), I highly recommend Tasty Pizza in Cupertino. You can get a signature pizza (10 inches) or they can customize one for you for $9.40 before tax and tip. You can even get a pie with everything on it. The twist here is they have pizzas with Indian flare, like one with butter chicken. The toppings are great, but what really wows is the crust. They tell me they make everything onsite.
Even on a Friday night at 6:00 pm there was almost no line and plenty of seating. Menu below.