Win7 Calc is cool!

Having recently upgraded Vista to Win7 I didn't notice firstly that Calc.exe has been renovated significantly. Now there are four different calculator types - Standard, Scientific, Programmer, and Statistics. Plus there are new panels for unit conversion and date calculations.

Follow-up: Why I consider these features missing in Java

Some time ago I created a list of features I consider missing in the current Java implementation. As I recently realized it makes sense to provide reasoning for some of them to be in the list.