Just stumbled across this aging post, but couldn't resist adding my two cents.

Ever since I got sold on .NET I've been using the command prompt constantly to run the C# compiler. Rather than having to load VS.NET just to test a code snippet or two, it's infinitely more convienient to write up a class in NotePad and compile an assembly from the command line. You end up with a mere two files, as opposed to a folder full of .NET project files and the two files you're actually interested in, the class file and the assembly file. Makes organizing my work a lot easier.

- Bob