If it's a buffet, you're golden. Indian food is really good. Hell, they can even make spinach taste good, and I HATE spinach.
If you're ordering off the menu, just ask your Indian co-worker for his suggestion. If you're a real gringo with strange ethnic foods, then just get a Tandoori Chicken with some saffron rice, dal (legumes -- lentils or chickpeas usually), and plenty of nan (flatbread) to soak up all the sauces and chutneys and stuff. And get the kheer (rice pudding with cardamom and rose water) for dessert.