I just read a comment about not being able to make "anything but rice" on a rice cooker. That is certainly true, but this variety is extremely large. Just google 'biryani', an Indian dish that is made of an aromatic combination of rice and veggies/meat.

Since most HN readers are likely to be non-Indians, I would just like to point out: its incredibly easy to make delicious Indian food, and its incredibly easy to make biryani on a rice cooker. The spices are what make Indian food delicious, and these come packaged in small packets at any Indian store (Some even have recipes on the back). Look at a few recipes, try them out and surprise your gf with your amazing cooking skills :)