There is a reason that documentary won its division. The reason for the snack bar isn't just because Valve is awesome or because people are hungry (even though both of these things may or may not be true). Gaming studios like Valve and EA of LA do things like this for a particular reason (you should check out EA of LA if you think the snack bar was awesome). The reason they Do these things for their employees is because they have a hard job, not to mention the crazy hours they work (especially during pre-production wrap up). The snack bar or EA's game room are there to help improve morale (The starbucks in EA is solely for productivity purposes I think). By keeping your employees happy they won't quit on you during those stressful weeks/months/years, and with any luck they may decide to work harder for you.