C# and games

Hey /prog/! 5 questions for you.

1. What is C# used for except Xbox games?
2. What is a good programming language for writing games that run on windows...
3... and on other OS's.
4. Good prgramming language for writing windows apps...
5... and for other OS's?

>>2

Ok... I'm a little confused, I was thinking, before starting this thread, about using Java to write games and C# for windows apps. Care to elaborate why you think VBA is the best?