The first thing to know about a rice cooker is that it knows more than you.
It knows when the rice is done.
It knows how to keep food warm for hours on end.
It probably knows more about your emotional state of being in the kitchen than anything or anyone else.
How? "It's a mystery of the orient. Don't ask questions you don't need the answer to."
So, take it from me, a man who has challenged the Cooker's authority two too many times: be deferential in its presence.
The second thing to know about rice cooker is that it is arguably the most versatile piece of kitchen equipment yet invented. How versatile? Think of how versatile peanut butter and cottage cheese are: it's that versatile. Think of Kobe Bryant now with a post game. Think Philip Seymour Hoffman doing the Big Lebowski, Capote, and Doubt.
Want to cook white rice? Done. Brown rice? Done. Banana nut bread? Done. Steam vegetables? Done. Korean BiBimBap or Chicken Biryani? Done. Want to liberate women in Iran? According to the New York Times, thank rice cookers.
Roger Ebert, in the face of such variety, just calls it "the pot." Me? I'm a religious man. I call it "El Padre."
Bottom Line: Love the rice cooker because the rice cooker loves you.