Holy crap are you kidding me!?! There is a decent (non-basic) calculator program for linux? Finally qalculate to the rescue. The only feature sI've ever really wanted in a calculator are a "history" and an intuitive keyboard interface. I've tried all kinds of programs and this is the only one that was even close to what I wanted. When I used to run Windows I'd run GraphCalc which is totally awesome, but now I'm using qalculate.