Yeah in C# it has quite a few uses.

I'm working on a background fun project where there's a base class that is for olde style CPU emulation. Where you can derive a class from the base class and essentially design 8bit style CPUs.

I have a separate class as a generic Assembler that will work with any of the created CPUs. But, to be able to do that I need to be able to get information about instructions, arguments, opcodes, registers etc from the derived class.

So the assembler is instantiated with Assembler<CPUType> and then it uses typeof to instantiate the actual CPU class being used to get all the information.

So, that's just an example of when you'd use something like this.