Working at the R/GA-NYC campus gives you a very limited selection for lunch. Here are some tried and decent places to get your grub on when you find yourself at the 39th and 8th offices.
Julia Park: A bustling deli where you can get anything from a slice of pizza, a deli sandwich, sushi, or hot udon. Not the best place, but if you're not sure what you're in the mood for, it's worth a stop.
Julia Park: Best place to grab a salad. Just be warned - there's usually a line during the lunch rush. You're probably better off creating your own salad, just make sure you keep track of where your salad goes.