I received a rice cooker as a gift. I like to know if anything else I can done with it other than, cook rice. you have some ideas?
Any grains that cook by absorption, such as bulgur, work well. You can use it for couscous but as that just needs to be soaked in boiling water there not much point.
Wetter foods can be cooked in it but the cutoff won't work, so you'll need to keep an eye on them - only worth it if for some reason you can't put a pan on a stove.
While it is rice-based, risotto is worth a mention: a single pot meal in the rice cooker. It's worth starting from a recipe. Other similar rice-based dishes can also be done.
It's worth getting a rice cooker recipe book if you're feeling adventurous.
Almost anything that can be cooked in a slow cooker (on low) can be done in a rice cooker.
Roger Ebert (the film critic) has a cookbook for rice cookers : The Pot and How to Use It
... but there's lots of other ones out there, too.