Spreadsheets!?

So here we are in the next century ... and so is excel! Will surprises never cease? I will do my utter best to use any product but excel for my spreadsheeting needs. I am thinking something like openoffice calc as I really try to avoid anything that is branded, closed-source, and for-profit. Excel is probably the most developed spread sheet tool but I think I will have limited use for spread sheets in the first place. I will likely use a spread sheet program for tracking marks. If I trip over a particularly good example of an excel applet that represents a science concept then I will probably shamelessly lift it but I will still try to run the applet on calc first. The other likely use I can see for excel is that it is a very easy way for students to graph data. Unless I start manipulating masses of data, I am unlikely to spend any more time than I already have on spread sheets. Anyone want to show me a new, inspiring and innovative use for spread sheets?