Link To SharpDevelop: http://sharpdevelop.com/OpenSource/SD/Default.aspx
I have made (using a tutorial, but I actually get what the coding means!) a simple calculator. Check it out below!
[Note: There are some bugs. Aka don't divide by zero or you'll get a nasty Windows error.]
If you have made any interesting or silly programs in SharpDevelop, or in C# language, post 'em here!

-Jdl