They look pretty professional, and loading your images up and using that template could not be simpler.

BBC: The Big Picture Library

Aside from the typical mathematical applications obviously associated with your average calculator, we've seen some pretty nifty implementations that took advantage of the not-exactly-advertised features hidden beneath the number pad.

ENGADGET: Uni-Creation's All-in-1 memory card reading calculator

The volt is not solving the problem, your just burning coal instead of gas, and compared to that gas is pretty clean.

FORBES: Design Disasters: Three Ways Cars Are Getting Worse

That's - you can pretty much do and say a number of things in your own home that you might not be able to get away with on the street.

NPR: Examining Protocol In Disorderly Conduct Cases

As Daily Tech points out, this seems to suggest that any Vista upgrade DVD can function as a full retail copy of Vista, although it would also seem to be something that Microsoft could put the kibosh on pretty quickly, so you may not want to lose sight of that copy of your old OS just yet.

ENGADGET: Clean install workaround for Vista upgrade discovered